I like this guy but theres a problem.?

I like this guy but theres a problem,he has a girlfriend. I like him alot and cant stop thinking about him. One day when we were at the library i axcidentally blurted out that i liked him. the only one who heard it was him and my friend. The next day in the hallway i asked him if he liked me too. After a long pause i said "No i knew it." He stopped me and said" I have a girl friend" I said oh and walked off.the next day in the hallway(Again) he said my name, put his right hand over his heart and nodded. i said "What?" being clueless and blushing becouse he was talking to me. He repeated it and i said "what" again he said nvm and walked to cl. Later while we were loading the busses he said my name and said "I li-....ill tell you after spring break." i blushed nodded and walked to my buss. I wonder what he is going to say! Please help im nervouse!