Oh OP, you sound really dejected I'm sorry to hear that you can see you're repeating an unhealthy pattern but can't seem to stop yourself. I know how that feels from past situations and it's horrid.
I must remind you of what I said in my last post on this thread:
I don't even know you and I just missed a train on purpose to make sure I could send this. And I regret nothing! And I'm lazy as fuck so that must mean you're pretty cool
So share whatever you think would help you to share - we are here ready to listen if you need. Don't share anything you don't want to of course, no pressure 
Remember you said this - trust your gut again now, it usually knows best:
I feel overwhelmed with this new guy. He's love bombed me, made me feel something, promised me the world. I know this is all probably tactics though.* I think I'm in denial because I don't trust my own gut.*
He said very intense things, very soon and unsettled you deeply. You seemed to be a bit clearer when you last updated us, realising that his behaviour wasn't healthy.
Has the relationship sort of crept back up on you or has something big happens?