Please help!
I'm trying to find a yaoi manga where a handsome delivery man (seme) is obsessed and stalks his former homeroom sensei (uke).
The seme rents an apartment in the same building as the uke. He gets his sensei drunk and kinda molests him.
I really forgot the title. For a manipulative seme, it was not really dark themed that much.
Please help me find it!

Sounds like Koi Shika Dekinaiyo