I kissed and stuffed it all up?

im 13 and there's this boy. he is my Brothers friend. he is 19. I known him since i was little. the other day i was in the room with him and my brother my brother went to take a shower. his friend started to talk to him. i really like him. at the time i thought that he liked me and so i tried to kiss him because the way he was talking to me but not in a bad way. he pushed me back. he just grabbed wrists and looked like he was in pain. starring at me as if i was nuts. that's when my brother come in. he was really angry with me and banned me from seeing the boy. my brother was pulling me out of the room and by then i was crying. i tried to get out of his grip and run back to the boy. now it's hurting even more then it did before. he is the only guy i have ever liked in that way before. how can i see him again? or make the pain stop??