Charlie arrives home and finds his wife Sylvia bleaching her friend's hair in the kitchen, which strikes him as an unusual and somewhat unsettling scene. This moment triggers Charlie's growing awareness of the peculiar dynamics in his marriage, particularly the relaxed and easygoing nature of Sylvia's relationship with Will, a longtime acquaintance.

Charlie discusses his feelings of discomfort and exclusion with his friend Stewart, revealing that he is bothered not by jealousy over an affair but by the casual closeness between Sylvia and Will. He perceives their carefree dynamic as a threat, especially since it seems plausible they could sleep together if they wanted. Charlie's unease is compounded by a sense of smugness he senses from Will, which deepens his discomfort.

To address his feelings and attempt to bridge the gap between himself and Will, Charlie invites Will to join him at a Dodgers baseball game. Charlie hopes that spending time together in a casual, social setting will help them connect and ease the tension between them.

At the Dodgers game, the atmosphere starts off awkward but gradually becomes more enjoyable for both Charlie and Will, helped by the effects of alcohol. During the outing, one of Charlie's work friends lets slip that Will is often referred to at Charlie's office as "Sylvia's boyfriend," which creates tension between Charlie and Will. To calm Charlie's fears, Will reveals that he is currently dating someone named Peyton, which is true.

After the game, the group moves to Will's bar, where Charlie and Stewart surprisingly feel comfortable with Will and his friends. The party atmosphere is lively and somewhat juvenile, including antics like throwing scooters across the street as a display of strength. As the night progresses, Charlie's resentment toward Will and the relationship between Will and Sylvia begins to dissipate. Sylvia eventually joins them at the bar, further integrating the group.

During the bar gathering, Will mentions again that he is called Sylvia's boyfriend at Charlie's workplace, which annoys Sylvia. This comment prompts Charlie to confront Sylvia about her late-night partying and the nature of her relationship with Will. At this point, one of Will's friends admits to using ketamine, a detail that surprises Charlie and adds to his concerns about the environment Sylvia is involved in.

The night takes a dramatic turn when a drunk Will falls behind the bar and lands on a shard of glass, causing a severe gash in his forearm. When Will pulls the glass out, it tears an artery, leading to heavy bleeding. Charlie immediately takes charge, ripping his shirt to create a tourniquet to stop the bleeding, despite Omar standing nearby with bar towels. Charlie's quick and responsible action to tend to Will's injury surprises and pleases Sylvia, highlighting Charlie's dependable nature.

Following the injury and first aid, Will spends the night with Peyton, confirming his relationship status and alleviating some of Charlie's concerns. Meanwhile, Charlie finally opens up to Sylvia, confessing that he has felt somewhat cut out of her life recently. He expresses worry that he may have dulled her party spirit, which was part of the reason he fell in love with her. Sylvia's willingness to give Charlie blonde highlights is a gesture that suggests an attempt to reconnect, though Charlie's solution indicates he is still figuring out how to handle the situation.

The episode ends with a sense of progress in the relationships, as Charlie confronts his insecurities and Sylvia acknowledges the changes in their dynamic. The interactions at the bar, the injury incident, and the honest conversations between Charlie and Sylvia serve as key turning points that deepen the understanding between the characters and set the stage for future developments.

At the end of Platonic Season 1, Episode 5, titled "My Wife's Boyfriend," the night culminates in a chaotic but revealing moment when Will injures himself by falling on a shard of glass, causing a severe arm wound. Charlie steps up to provide first aid by using his shirt as a tourniquet, surprising everyone and especially Sylvia. This incident leads to breakthroughs in the relationships: Will spends the night with Peyton, and Charlie finally opens up to Sylvia about feeling somewhat excluded from her life, though his way of coping--letting Sylvia give him blonde highlights--shows he is still figuring things out.

The episode unfolds with Charlie growing increasingly uneasy about his wife Sylvia's close and carefree relationship with Will, who is often jokingly referred to as Sylvia's boyfriend at Charlie's workplace. To bridge the gap and understand the dynamic better, Charlie invites Will to join him at a Dodgers game. The outing, fueled by alcohol, gradually eases tensions, and Charlie begins to feel less resentful toward Will. The group then moves to Will's bar, where the atmosphere is wild and raucous, including antics like throwing scooters across the street. Sylvia eventually joins them, and the group's dynamic becomes more relaxed.

However, the mood shifts when Will mentions the nickname he has at Charlie's office, which annoys Sylvia and prompts Charlie to confront her about her late-night partying. The tension escalates when one of Will's friends admits to using ketamine, a detail Charlie was unaware of, adding to his discomfort.

Just as the night seems to be unraveling, Will accidentally falls behind the bar, cutting his forearm deeply on a shard of glass. The injury is severe enough to sever an artery, causing significant bleeding. Despite Omar standing by with towels, it is Charlie who acts decisively, tearing his shirt to fashion a tourniquet and stop the bleeding. This act of responsibility and care surprises Sylvia and marks a turning point in the episode.

Following this, Will spends the night with Peyton, confirming his current romantic relationship, which helps ease some of Charlie's insecurities. Meanwhile, Charlie confesses to Sylvia that he has felt somewhat left out of her life recently, expressing concern that he might have dampened her party spirit--the very quality that attracted him to her. Sylvia's response is to give Charlie blonde highlights, a playful but telling gesture that suggests Charlie is still navigating how to express and manage his feelings.

By the episode's end, the characters have confronted their insecurities and misunderstandings, leading to a tentative but meaningful progress in their relationships. Charlie remains the responsible figure, Sylvia maintains her free-spirited nature, and Will's presence continues to complicate but also enrich the group dynamic.

There is no indication of a post-credit scene in Platonic Season 1, Episode 5, titled "My Wife's Boyfriend." The available detailed recaps and reviews do not mention any additional scene after the episode's credits. The episode concludes with the characters' interactions at the bar and the evolving dynamics between Charlie, Will, and Sylvia, followed by the end credits accompanied by music, but no extra scene is described.

Charlie becomes uneasy because he notices the relaxed and easygoing nature of Sylvia and Will's friendship, which makes him uncomfortable as it seems plausible they could sleep together if they wanted. This feeling is compounded by Will's perceived smugness, which adds to Charlie's discomfort and prompts him to try to bridge the gap by inviting Will to a Dodgers game with him.

At the Dodgers game, Charlie tries to connect with Will and make him feel welcome, even giving him a big hug that accidentally causes them to knock over a passerby's popcorn. The outing is part of Charlie's effort to understand and express his feelings about Sylvia and Will's relationship, and it leads to a mix of awkwardness and attempts at bonding.

After the Dodgers game, Charlie and Will continue their festivities at Will's bar, The Lucky Penny, where they get increasingly drunk and show off their 'secret skills'--Charlie sings, Stewart recites prime numbers, and Will replicates a bar dance from Coyote Ugly. Sylvia later reveals Will's dance to everyone, which turns out to be a mistake and leads to tension.

Charlie accidentally lets slip that Will is dating Peyton, which Will had lied about to Sylvia. In response, Will reveals that Charlie told all his colleagues that Will was Sylvia's boyfriend, which seems spiteful and suggests a meaner side to Will's character. This exchange creates tension and complicates the relationships among the characters.

Charlie confesses to Sylvia that he has felt a little cut out of her life recently, expressing his insecurities. Despite the awkward and tense moments throughout the episode, including the revelations and misunderstandings, Sylvia and Charlie manage to make up and improve their communication, helping to strengthen their relationship.

The TV show "Platonic," Season 1, Episode 5 titled "My Wife's Boyfriend" is rated TV-MA, indicating it is intended for mature audiences and is not family-friendly for children. The episode contains moderate profanity, moderate alcohol use, and some mild sexual content or nudity. There is no significant violence or gore, but some scenes may be uncomfortable or awkward, such as a "hot dog scene" described as particularly uncomfortable though handled with humor. The episode also explores adult relationship dynamics and includes some tense or awkward social interactions that might be upsetting or inappropriate for sensitive viewers or children.

In summary, this episode is best suited for adult viewers due to language, mature themes, and some uncomfortable comedic moments. It is not recommended for children or those sensitive to moderate adult content.