Mark caught cheating on Jack

Mark caught cheating on Jack is the fifth episode of How to Catch a Cheater. In this episode, Jacksepticeye catches Markiplier cheating on him with PewDiePie.

Characters

 * Yandere-Chan with eyepatch
 * Jacksepticeye
 * Markiplier
 * PewDiePie
 * Bijuu Mike (cameo)

Plot
As always, Yandere-Chan with eyepatch starts the episode by introducing herself, and explaining the events of the previous episode. She then enters the plaza, attempting to scope out a cheater. She blinds herself, attempting to sniff one. Eventually, she detects that the cheater is Jacksepticeye. She contacts her co-workers, explaining that she's found one of the biggest YouTubers and that they'll be filthy rich after that episode is aired.

Yandere-Chan with eyepatch follows Jack out of the plaza. She spies on him as he records a video of him playing Yandere Simulator. He starts to laugh maniacally, and starts to go in the direction of the bathhouse, and she stalks him there to see what he's doing. She follows him into the bathhouse, where he meets Markiplier, and they begin to kiss. Yandere-Chan with eyepatch contacts her co-workers, and informs them of the good news and tells them to send in PewDiePie.

PewDiePie arrives, and Yandere-Chan with eyepatch tells him to go into the bathhouse and seduce Mark. Felix does a bad impression of Jack's intro, and Mark abandons the real jack for him. Jack is heartbroken, and Yandere-Chan with eyepatch asks him why he thinks it happened. Jack says that "he didn't have time to react" and curls up in the fetal position, shattered.

Suddenly, Bijuu Mike enters, after hearing "views". Yandere-Chan with eyepatch, confused, asks him who he is. Mike says he's "Yandere Mike" and that he's the creator of the show. She asks how many subscribers he has, and he leaves, knowing whatever he has won't suffice.

Meanwhile, Mark is responding to Felix's mating call and is trying to sway him. Yandere-Chan with eyepatch attempts to remind him of Jack, but to no avail, as Mark advances towards Felix. She returns to Jack, attempting to console him, but only angering him. He exits the bathhouse and goes head-to-head with Mark, who's making attempts to defend himself. Jack throws inhumanly fast kicks, and Mark falls over, screaming furiously before he dies. After killing Mark, Jack snaps out of his rage and looks on at what he's done in guilt. He goes to the incinerator, opens it, and ends his life. Meanwhile, PewDiePie is drowning himself in a fountain, Yandere-Chan with eyepatch crying out in desperation. The episode then comes to an end.