I need help...

Okay, so me and this boy I know were enemies ever since the 1st grade. We hated eachother sooo much!! But then in the middle 5th grade he started being really nice and polite to me all of a subben. He started Schauspielen sweet and caring and he acually talked to me Mehr often then he used to. When I left my school I was talking to my friend on the phone (who still goes to the same scholl as him) and she sagte that she heard him say to his friend in the hall way "Man, I miss Brianna (my name)". I kind of like him but I dont know if that means that he likes me back oder he just plain misses his old enemy..another boy was like that too, he was also my enemy but then started Schauspielen super sweet and he was putting his arm around me a lot. I have no idea what both of the boys were trying to say. I dont know if they were trying to say "Hey, I like you" oder "Hey, I want to be your friend".
Please help me cause I'm soo confused!!