Some people have abusive, negative, controlling tendencies in their blood; they are wired for havoc, bickering, and deception. They know of no other way to interface with others except through their created chaos.
Chaos is their home-court advantage where they play their mind-games so they can have power over you; it's a rigged game you can never win.
Listen to your inner-voice.
Get out while you can!
That exclamation point denotes urgency, it requires your immediate attention. You do not want to associate with this type of person under any circumstances. If you are involved with ANYONE that displays these tendencies, it is time to move on, as fast as your little legs will carry you.
Don't ever risk getting caught in the web of an abusive, controlling person, there is no good reason for taking that on. You are worth more, even if you don't feel that you are, YOU ARE. You need to be the most important person in your own life. Your first step is to remove yourself, then take a look at the reason you were attracted to them in the first place.
No one has the right to abuse (mentally, emotionally or physically) another living thing, and the fact that this type of person thinks it's okay is a huge red flag. This is a destructive relationship, don't continue to allow them to 'beat' you up and don't waste time beating yourself up because you fell for it. You're not going to win, so don't play the game. Get out!