STOP BEING SORRY!!!!

Get tough! Maybe you were tough while drunk and he didn't like the truth?!

I have just been through something similar. Heres the thing I can be VERY horrible and took complete advantage of my Dp turns out to be a touch of PND.
But what makes me mad is while Im sooking about him breaking up with me and getting PND help, just so I can FIX ME so we can try again. He on the other hand doesn't change the little things that would set my PND off.

The problem with you Dp is he is taking NO responcibility (SP) and you of course need to take some but you are taking WAY to much.
My Dp threating to leave and telling me he doesn't love the person I had turned into was the wake up call we both needed.
But I can now see that instead of realising the person he loved had changed and worring about her, he chose to up and leave because things got to hard.
We are working through things but needed to both see we BOTH had things to fix within ourselves.

Please STOP being so down and sad and probably angry at yourself because another relastionship is go down, get strong and try make things work. Then if it doesn't you can walk away with your head held high, knowing you tried your best and can then move on.
But it just sounds to me that your Dp is being a typical poor hard done by man and not seeing it from your situation.
Wake him up a little.
Feel free to Personal message me if you need some chats about how my Dp and I are working through things. As it sounds VERY much the same

P.s sorry for putting Dp and I in there so much but your situation sounds VERY alike