Do you think my boyfriend is cheating?

So in order to understand why I’m asking, I have to give a little back story.

So back in October, I found out that my boyfriend had been cheating on me (not physically but it was online). Ever since then, I havent been the same. I don’t trust him anymore, but I have access to his phone and computer whenever I want.

Before I found out he was cheating, I kept having dreams that he was cheating on me. Well, now I am having those same dreams. Another weird thing is when I tried to go on his computer the other day, it wouldn’t turn on. I know it works because he has played games on it since I tried. Now these things may just be coincidences, but I don’t know. I really do love him but i’m so scared he’s going to do it again or is already doing it.