is this online love playing me? Or is it love?

[Guest of Aerosmith]

I need help here. I have been chatting to this guy for almost a year now. A few months into our comunicating he mentions that he was beginning to really like me. We both have someone in our lifes at the moment. And we both agree that it is about comfort. He used to message me all the time, and now it is me messageing him. I feel bad about liking him, but I think that I am ready to meet him in a public area. However my worst fear would be that him just want me for sex and that be it. How do I know the early signs of a player before I get hurt. I guess what I really want to know is how do I know if he is interested in me.