Do we have a future together?

in second grade i was in this boys class in second grade i loved him now i am in ninth grade... through thoughs pass 7 years we hated eachother but thensomthing changed. we whent to a dance to gether (as friends) and his sister told my brother he may like me but how do i know for sure? and how do i let himknow i like him to? do we have a future?