How do i know if my crush likes me?

I'm only in 5th grade and i don't have a cell phone so i can't text him.i don't have his number either.the thing is i've liked him since the start of 4th grade he's in my homeroom this year we talk once and a while and everyone thinks we r dating bc i took a bunch of pictures with him on a field trip.everyone in our grade and even my sister and her friends think we would be a cute couple; i do to! we r just friends now but i've herd people say he likes me.we don't get to sit together at lunch bc he sits at the "Guys" table..I can't sit there!!!! i told all of my friends about this they said i should go for it but...does he like me?