How to tell if he likes you

So this guy I like, same age, we have lots in common. But I'm having a hard time telling if he likes me, he seems to when we hangout in person he just barely texts but when we are on the phone it's about an hour long conversation. He does text me usually within the same minute if he's by his phone and not busy. Although he says he doesn't want a relationship at this point cause he's getting ready to go into the military.
HELP!