You both always seem to hang out. He always calls you on his free time to hang out. And you always call him on your free time to go hang out. You guys spend all of each others’ free time together. He may even ditch his friends to go hang out with you. If he ditches his friend for you, then it’s real; he likes you and really wants to spend time with you. People don’t normally put time into anything that they don’t care about. And if he spends time with you a lot, then that means he cares about you a lot.