abusive relationship?

A few weeks ago, I started seeing a guy and we slept together. I stayed over the weekend, went home Sunday and the following week, we spoke until Monday last week, where I went to see him again. I've more than once desired to define what we are, but the answer is unclear, due to his current situation. He's going through a phase of transition, trying to sort out his life etc and therefore he's not in any position to make any commitments or promises and I accepted that.

I've been more than understanding towards where he is and how he feels, but I somewhat feel that he doesn't understand me at all and just a few hours ago, I saw the worst side of him.

For now, we've as mentioned, been in this undefinable friendship, we do have feelings for each other and desire more, but it's just very unstable and I made the decision to back down, just be friends and tell him I couldn't stay in this area. I needed something stable, something that I could grasp at and hold onto, boundaries and well.. He didn't like that.

The conversation more or less went like so: He told me that I was being unfair, that I needed to explain myself and that he seemingly didn't understand why. He doesn't trust me or believe my words until I somehow prove them true.

At one point he called my behavior schizophrenic and this hurt me deeply, I hung up on him and he flew off the hinges. He blamed me for trying to control him and the relationship, he seemed quite threatening and told me I had no business setting boundaries without consulting him first and talking it over, that I more or less couldn't make decisions for myself.

It was completely uncalled for, as I feel I've explained myself etc.

There's a ton of red flags and I'm really hurt and upset by the things he said to me.

I however, don't know what to do at this point. I really would like to keep him in my life as my friend, but this whole thing is just unstable, a ticking bomb.