What should I do?

I really like this guy we've known each other for awhile lost touch and got back in it. He says he likes me but sometimes he shows it sometimes he doesn't. He only texts me when it's convenient to him than complains when I get upset if he doesn't text me... we've went 3 days without texting and I know he's busy with work and stuff but he has to have some free time... sooo should I just wait it out or leave him. I've already confronted him about it