Virtual Side Chick

I met a guy online...in an app where we were just playing a game together. He lives 1500 miles away! We started chatting and have a ton of the same interests. We enjoy talking to each other....the problem is he is married with a child! He made it clear that he loves his wife, but he is still chatting and talking to me on the phone. We miss each other and I am head over heels in love with him! He has never once told me that he loves me, but that he misses me a lot & sends me kisses via messages. Since he is sneaking around on his wife and still talks to me, do you think he had feelings for me too? Am I crazy for thinking that he would leave his wife for me? Have any of you ladies been in this situation before? I can't explain why I feel this way...