I highly doubt, given how the manga is written, that Motoyama is screwed out of cute hick girl.
I think it's fairly obvious what's going to happen. Motoyama is going to drift away from Enomoto, she's going to feel lonely, maybe talk with the other boy but feel something's wrong. Maybe Yamane and his girlfriend jump in and help her realize her feelings, and she'll pursue and confess to Motoyama instead. Nice foil to their relationship until now, which was mostly Motoyama pushing it.
I'm more concerned with the fact we probably won't be getting a Motoyama chapter for god knows how long. When you stick drama in your comfy manga, and we have to wait forever to get resolution, it's really damn annoying.