I think they'll indeed end up together !! I have to give it a reread cause I don't remember clearly but the person yoshinaga got caught kissing told the other main with black hair (sorry I forgot his name) that he may be the one that yoshinaga needs. it was something along those lines, but he was basically inferring that them two would get together :))
If you read chp 9 you'll see some development ;)
It looked like they were gonna get together from the beginning I thought?
Haven't read the new update yet but....I'm getting so impatient with this lol. IDK if the 2 main guys are supposed to end up together or if this story is just about how they maintain their relationships separately. Seems that there's been no kind of romantic teasing between the two ┑(￣Д ￣)┍