Creepy guy at mcdonalds?

ok so me and my 2 friends were at mcdonalds and we were goofing off cause we were really hyper. and i am really talkative so i like talked to everyone in the restaurant, but this one fat, biker kind of guy wouldnt leave us alone and he kept on trying to talk to us...he asked ur what grade we were in and how old we were. im about 14, which is the age most predators go after. by the way the guy was in the store before us. and we didnt get anything to eat we were just going in for the fun. ...anyways so we went to a diff booth at a diff side of the store & the guy kept staring at us. so we waited there for like 2 hours for my mom & the guy never left? and as soon as my mom came the guy left. am i just overreacting or what??