Movie where girl loses her virginity to a bedridden old man in the end lol?

This movie was so weird, but funny and I can’t find it. It’s about a girl (high school/college) who’s trying to lose her virginity. She tries with one guy in his car, but he’s unattracted to her and pulls out a magazine to try to finish that way, but she notices and gets upset, saying something about “you find me that unattractive” or something like that and then she leaves. Another time she tries with some jock and he comments on her perfect t*ts but for some reason it didn’t happen either, can’t remmeber why. Near the end of the movie she ends up doing it with some old man who’s like bedridden, and I believe he was one of the character’s grandfather lmao. Does anyone know what movie I’m talking about??