Happy Together (1989)

Roommates by accident... lovers by choice.

Christopher is an ambitious college freshman, striving to become a writer. Through a computer fault he's assigned the same room as Alex, a real party freak and... a girl! He's annoyed and tries to get a different room as soon as possible, but when he learns to know her, he also starts to like her. She not only improves his sexual life, but also his writing skills