if he said it in a rude way, then move on. if he was kindly said no, then ask if you can be just friends. if you become just friends, maybe he will like you once he gets to know you better.
can you answer my question http://answers.yahoo.com/question/index;_ylt=AozGV6idlNAUKEzubnme2Nbsy6IX;_ylv=3?qid=20100508222205AAMaTvi