Do I like him or am i leading him on?

We have known each other for two years and at first I didn't like him at all. He was unattractive and he liked me, but i talked to him because it was the nice thing to do. We fell out over mean things i said and during this time i felt bad and didn't know what to do.when we became friends again we started talking EVERY day for hours (phone, internet, in-person, etc) and he likes me again. This has occurred for a year now and now I get jealous over the people he talks to, but I'm not sure if i like him for real. Recently, we have kissed, talked about intimate things, and call each other nice names. He says that he is in love with me, but I don't know if I am or if I'm just used to talking to him and want to like him because he likes me. I'm so confused. I want our friendship back but then again, i want him to like me still. I have never experienced someone who actually loves me and it feels good, but I want to make sure that I feel the same and am not pressured to feel that way towards him because he does. Plus, i don't want to hurt him, but my friends told me that i've led him on. IDK.