Not Sure What to Think

I (30F) have been on and off with a guy (32M) for 2 years. He is never able to commit citing to depression and his hatred for his work. We reconnected earlier this summer and became very close and I thought he was coming around. Every time I ask to be exclusive he says no because he didn’t want to make things serious between us saying he’s not in a place to date anyone but maintained he hadn’t seen or slept with anything else. He said some mean stuff a couple weeks back and we didn’t talk for a week. He reached out because he missed talking to me but the day he reach back out told me he went on a date that same day his mom had set him up on (he didn’t like the girl). Again he said he wasn’t able to predict whether he’d take opportunities like that if they presented themselves. However, he calls me every night and talks to me for 4 hours, offers to cook for me, and we support each other. He also has been saying how depressed he is the last couple weeks and I’ve been there for him. Next weekend we were set to hangout but he adjusted the days we will see each other because he is going partying in New York City. My question is, do we think he really is unable to date me because his depression or it’s an excuse?