Is my boyfriend cheating?

I think you know the answer already because you haven't put anything contradicting the fact he's cheating on you. I think he's cheating on you or wants to be single again. You've been with him for a long time now and should be at a level where you can ask him upfront what's going on and if you're too embarr, check his cell phone and email. Yeah, that's horrible to do, but you have find out the truth, even though the truth may hurt. Guys are not always upfront.