What should I do? Would that be cheating?

So let’s start with a back story. Me and this guy meet when I was 19 and he was 18, I’m his first girlfriend, and we have been dating for 3 years, but lately he’s been where distant, is calling me names, doesn’t want to speak to me and etc. But when I try to break up with him, all of sudden he’s the sweetest boy I know. So few days back, boy from my past that I didn’t really get the clousure on what could have been, started writing me, that he still likes me n stuff (last time we talked about 4-5 years ago). He’s older than me, is very stable and he is asking me to go out so we can talk, but I can’t help but feel like it’s cheating and isn’t the right thing to do, even if my current boyfriend isn’t treating me right. I feel like they both want to play me.
What should I do? Would that be cheating?
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