What is on his mind?

I have known a guy for 1 and a half years, we have been seeing each other about once a week for dinner and sometimes movies. Most of the time, I am the one asking him out. He is single so am I. When we knew each other, he admited had a little interest in me and he knows that I am still fond of him up till today. I am attracted by his charisma, gentle and caring behaviour. He tells me that he treats me as a friend. His chinese horoscope is a horse while I am a rat.. according to horoscope, we are not compatible. Recently, I found out from him that he had been waiting for a girl.. that girl is someone he knew when he was 18.. 11 years ago. He is not a flirt with girls.. I know him enough. But he never got to be with that girl as she was attached. He had a quarrel with her recently and is trying to forget her. He has always been good to me, comforting me when I need him most. When we watch movies and cry, he would stroke me.. sometimes move his fingers along my ears. What is he thinking o