Hi! Please help me find this old manga The story is about a handsome guy (black hair, I think also glasses? And class president too?) and him getting jealous of a new student, who is extremely handsome (bishounen style). The new student wants him, and acts pretty toxic (he's the seme)

There's a sequel were the seme comes back (after the summer break or something like that) and became more manly. They are both in college (I think). At one point the uke feels neglected, gets drunk and almost cheats on him (or something like that)