I have few memories of a movie I’ve watched 15-20 years ago.
I man (maybe a teacher?) is dating a younger girl (I think one of his students?), like secretly. The girl has problems with her family -who is rich- and they pretend they fight, or the girl fights with the mother (I remember throwing some glass), but then one discovers they were together.
Then there was the other girl.
It seems they were the 3 together, but the girls jealous of each other. There was a scene where the guy tells them to kiss each other (like to make up)
I also remember some trial scenes. And a statement, something like “a bitch doesn’t make me come” from the guy towards one of the girls (I think it was against the rich mother)