Partners

Hi, I’m a guy but I really don’t know what to do about this here I go. This guy has liked me since middle school and I love him so much, he gets so nervous around me when I try to talk to him he just smiles at me and try’s to talk but then he like runs away from me. Like the other day I was waiting for my bus to take me home he stopped and looked at my friend and me and ran off. I really like him a lot and we had sexted for 2 weeks and I asked him if he wanted to have sex he said no and I said sorry and he hasn’t talked to me since what should I do to make him talk to me again?