i have a couple,
first one is story line where mc gets dumped by his gf and ends up going to a cafe with a dog and talks to the ml and feels better, the next day he goes to school the ml ends up being a teacher for his class, his two close friends also like each other/end up dating.
the other one is where mc gets assigned to an author and helps him write books, they end up falling asleep this one time on the couch and then when they wake up ml kisses him and flusters mc (much more to the story line but thats why i remember ) mc had purple hair as well
the second one reminds me of this
https://www.mangago.me/read-manga/hayama_sensei_no_dakimakura/
i honestly dont remember alot about the story line but can't stop thinking about it and its bugging me i cant find it, its a bl set in university and the mc has a girl he likes? (maybe, not sure about this) and someway somehow the ml ends up saying he'll practice kissing with him or something like that. the mc would always eat lunch at a specific spot on campus and ml would find him, and one day the mc decided to stop the relationship (i think because he realized he had feelings for the ml) and as he was on his way to leave somewhere the ml went after him. mc was nerdy type had black hair and glasses
Nerd project??
no but looking at my description it does seem like it