Help!?!?! boyfriend trouble!?!?!??!?

okay so me and my first boyfriend have been together for 8 days but i have a huge problem. i was at his desk in school yestorday but this kid tried to sweep the broom around the clroom and i stopped him. the kid kept saying move to me but i said no. this other kid came over and said please move over im like suree. cuz i like being treated nicley. my b/f gave me this look and said hes mad/ sad..idk what to do!! he thinks i like that other kid but i dont!!i keep telling him but he doesnt believe me!! and we had problems like this as just friends too! i really like him! and even one time he thought i was dating his best friend!! (other than mee) !! it was soo wierd. now i feel wierd to even be around him. and when i am i feel really scared hes going to say something like go makeout with ur b/f or somethn like that!! im only 11 so please help me!! im just 100% spoiled!! not my fault!! im scared hes going to brake up with me!! oh and hes sad about not getting to see me over the summer.!