It does fit.

Have you got words for this ? lol

When he is upset about something I feel its my fault even if its not I feel I have failed and blame myself so will say anything to make him feel better. He has DID/MPD so its he is depressed or not himself a fair bit and I find the different moods difficult to handle as like I said I blame myself.

He is very understanding so talking to him isnt a real problem unless he is depressed or tired.