How do I keep myself from liking him again?

Ok so I am friends with this boy and a couple of years ago we were really good friends and talked a lot. We started going out but it was more like friends liking eachother going out. Long story short lots of things happened and I got hurt (not that he is bad or anything). So we aren't going out anymore and it has been a couple of years since then, but we have been talking more and I feel like if I talk/hang out with him more I am going to like him again. The thing is I don't want to because I know he doesn't like me like that and I am only going to get hurt if I like him again. How do I keep myself from getting these feelings?