How to make a 14 year old guy in love with you?

Hi,im 13 yrs old a girl.I went to christin camp and i met a nice guy he walked up 2 me at the park and ever since that day he would talk to me all time and im Friends with his sister.And he told me who he liked and i got sad and felted like a knife shoot through me because he didn't say my name.and the last night at camp we all watched toy story 3 and i was elevating my foot cause it was swollen and he got me my popcorn and water and threw away my trash and we would sit by each other every day and he would get my food for me and open the door and he was just a gentleman to me.and its been a week and we talk on facebook still.but he's not the most attractive guy and i didn't find any interest in him until i started to hang with him i like him for him.help i want to ask him out but im scared and i love him someone help please and im going to six flags with him tomorrow and his sis is go in and some of her Friends please help.!!!