looking for this manga. i think was a short bit student x teacher at the start then became teacher x teacher

uke(older. Teacher) used to be in a relationship with seme(younger, possibly student when first got together. Uke is first love?) but seme's father finds out and forces uke to dump the seme, leaving seme heart broken. Years later seme has now teacher(?) in same school as uke and chases after the uke. Uke acts cold or treats as if he broke up because didn't love the seme and that why they broke up. May end up sleeping together at some point, even though claims of not loving seme. Ends up being taken to seme's home one day and seme tries to get answers from uke and seme finds out he never stopped loving him and that it was his father who made them break up. Both get back together.
Seme may come from a wealthy home or father has large company and has thrown away that life to become a teacher to find his first love

It may have been part of a volume, a separate story from the main story possible?

who needs drugs when you got yaoi

This could be wrong, but it partly sounds like Goodbye Lilac?

떡대수 supremacy

It's not that manga but thank you anyways

who needs drugs when you got yaoi

This one I think

Been there, read that

Sorry for the late reply
Thank you so very much that is the one i was looking for!

who needs drugs when you got yaoi