Oh Treeners,
You were caught up in a very toxic situation.
I have to agree with the others, if you truly want better for yourself, run for the hills and never look back. This guy is not currently available. He is not relationship material. You will only experience more unhealthy behavior from him.
The writing is on the wall, save yourself.
You deserve some normalcy, and will not find it with him at this time in your life. You have already invested 4 years, and things keep spiraling out of control.
Best to keep your distance, and get back to living your life.
It will hurt for a bit, but you can choose to value yourself and your life.
Keep posting, we understand.