Is it bad that I'm seeing another guy?

I recently broke up with my boyfriend of 10months because it really wasn't working for me anymore, and i also began to find an interest in a different guy who I knew way before my boyfriend. I know this sounds bad but I just couldn't go on in my relationship anymore even though I really cared for him. Me and this new guy are hanging out a lot but we're not going to rush in a relationship. I feel a little guilty about it but at the same time, I really feel something different with him than I did with my boyfriend and I can't fight the fact that I like him. Is this okay? I just feel really bad about it! Thank you in advance!