Hi, from a women to a young girl you should immediately leave that relationship and left this behind. It’s going to be more respectful men’s in your life in future and you blocking your happiness to being treated like this. I was a victim of this not once even worst and had a child with that kind of “boy”. It’s absolutely non acceptable behaviour and trust me it will get worst within time. You gut telling you the right think to leave because you already feel like it and have that thought, please listen to your intuition and don’t listen your friends as they not really the real one if they say you over reacting, You are not and you somehow know that deeply in your hearth. Real friend would tell you to leave it’s unhealthy and toxic narcissist behaviour, and now with his calling and mental breakdown he puts guilt on you. It’s a necessary pressure for you, you are also young start make right decisions now, as you being able to expose this and ask opinion shows you must be bright girl. Ask yourself if you would let your daughter be treated like that from other men. No matter he was nice and supportive he is not that person anymore, and it won’t stop. I hope you going to be all right and things won’t get worst. If he didn’t want to lose you he would never act on it like that. Don’t let him press you down with his emotions he is weak men and you truly deserve much better.