Remus Lupin

after Remus finds out about "the prank" where Sirius sent you (Snape) to the womping willow were Remus was transforming. the other pranks started coming to light. the one were James pulled your (Snape's) trousers down in front of the school and the one where James and Sirius found Remus's poems and used them to make you (Snape) think you were loved only to make fun of you. Remus starts avoiding the marauders and starts trying to make thinks right with you (Snape) and ends up falling for you.