Do think so. My imagination sets when Morinaga in job training and getting close with one of the senpai there. Then, the situation in which Morinaga really is busy and can't go home but from the outside look, he seems absorbed by this new (hot) senpai. Just how will Tatsumi react to it..
I want that happening in the manga (≧∀≦)
I think that would most likely happen is that Suichi would reluctantly dismiss it, but then regret it, THEN he'll realize his feelings and get his guy back. Or what you guys said. Either way, both are radical. ╮(￣▽￣)╭
It'd be awesome if Takanaga sensei puts Suichi in trouble if Morinaga starts seeing someone else, that will make him think more about his feelings (=・ω・=)