How to treat a guy I hurt?

There is a guy i really liked for some time. We kissed few times and went out. I turned him down then. It is like a year ago and now i have a boyfriend. We didn't talk together for a long time. Recently we started talking again. It is not much of a serious talk, we like tease each other and stuff. He seems fine now. He smiles, crack jokes but it is just different. I know he was really hurt back then. I dont know if he is over it now but as i said he looks better now. But often i can see a pain in his eyes when i am with my boyfriend and this guy is around. I dont want him to be in pain. I think he is really good guy and wish him the best. I know i broke his heart i am sorry for that. I hope he finds a girl that will make him smile and happy. How to treat him?

How to treat a guy I hurt?
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