What should I do

So, I've been seeing this guy for almost a year. He told me he doesn't want a relationship at the moment and I'm cool with that I told him I'll still hang around and have sex with him because he's the only guy I'm dating at the moment and I like him but my options will stay open until I meet someone I'm interested in. I've recently started back talking to a guy I've know for two years. We dated on and off. I'm really starting to like him. He makes me feel good emotionally because I don't get that with the other guy. I want to know am I wrong for starting to like someone else. I'm not in a relationship but I feel like I'm cheating because I've only been with him for almost a year but we have no title.