For a 2.8GB game first interactions with people are 99% under development.
And of course the mc cant feel love or comfort, or any other feeling that comes from close contact, with another human being, without talking about his boner and oogling and fantasizing right away.
And of course he is gonna have a boner sitting next to someones ass, and of course they are gonna get interrupted, and of course they are gonna jump scared totally overreacting and cut the scene. Of course. Cause that is the only possible outcome ¿why think about writing something more complex yourself if you can do bullshit cliches over and over again like anybody else?
Im gonna leave and idea here:
So in the scene Mcs crotch is near a cute females ass and he gets a boner, somehow she is able to feel it, and decides to tease him for 1 frame time until the predictable cheap interruption happens. Obviously they are not speaking about it, they are talking about something else (a guitar lesson in this case) but they can play "the game" in the background, she may be teasing but a dude 95% of the time is gonna go for it and take too much of a hint that may not be there, or keep playing and see where it goes.
In this scene they are in a real world with the guitar lesson, and in a "parallel game" where she is teasing him and he doesnt want to scare her and lose the opportunity.
They get called for dinner or whatever, instead of a cheap jumpscare, they could just maybe snap out of the "parallel game" and reschedule the lesson, playfully or not. Maybe both snap out of it, maybe just one and continue the scene with the stated premises.
Maybe one of them become selfconscious and feels embrrased for a while, or just pretend it didnt happen, or they just dont care and feel dissapointed that it ended, cause it felt good, or cause they bonded. I mean sex doesnt have to be the center of everything. Maybe he gives her a thankful kiss or hug after they are called for dinner and leaves.
Maybe he just gets frozen cause he thought he was in control and her "roomate" took initiative, and i dont know, maybe she straight gets up and leaves while he cools off his boner (this happened to me numerous times
) or she could playfully get up and sit on his boner on purpose. Maybe she is the one kissing her for not overstepping, and leaves.
So many possibilities, many many more than a cheap jumpscare.