How to get over someone... Please help.?

[Ellie]

I'm sixteen and I'm technically only "talking" to one guy(B). I mean we've been texting for a few days now and I feel like I could actually really like him but I'm stuck on someone else (A). I never see either one of them but when I see A I really have fun... I just really have a thing for him but I can't see it working out even though I'm pretty sure he likes me.
Is this making any sense to you?
Would it be a bad move just to message him over twitter or something and try and talk? He's not much of a talker but I really want to get some closure or at least another reason as to why I should just get over him.
I'm just so confused. What would you do?