Why do homosexual women show less discontent than their heterosexual counterparts towards their sig others?

Really? that isn't what I've heard. I've heard that their relationships fail at the same rate and that they face domestic violence at the same rate as well. Same goes for gay male relationships - all the same crap happens to them that happens to straight people. They get cheated on. They fight. They break up. Stuff happens. The only difference appears to be who they're sexually attracted to. They aren't better at relationships and they aren't happier. They're still just regular people.