Does my neighbor like me back?

ok he's lived next door for a year now and I have liked him since the beginning of school and he's in 8th grade and is 15 years. old and I'm in 7th and 13. I play b-ball with him and his bro. Yesterday we had like a gargantuan water war. I wound up more...

wet than either of them he kept spraying me! I want him to ask me out........SOON but how do I know he likes me back?

he should be in the 10th grade but you wont know if he like you unless you ask him