yes they can turn the charm on and off - it is all part of the control... read about cycle of abuse
www.hiddenhurt.co.uk/Abuser/dynamics.htm
he will keep saying it because eh probably knows/feels that you will give in eventually, and not go, he will wear you down with the negative attitue...
"He clearly has mental health issues and threatens to kill him self often. I am very worried about how he will react. "
how he reacts is his problem. apart from the porn addiction etc - what actual diagnosed MH issues does he have? tho i guess if he gone for CBT must have something?
the threats to kill himself - when do these happen? "often" - once a week? what makes you think it is at all serious?
even if it was serious - whose problem would it be? it would be his choice....
i've been on the receiving end of those threats - for years before i left and after i left exP...you know what, even at his most severe and real MH crisis when he was self harming - he couldnt actually do enough to even qualify as suicide attempt...
heck even the MH psych unit nurse said if he wanted to stick veggie knife in his thigh - well it was his choice and they weren't concerned...
all the threats were just that - part of emotional blackmail...
you H hates noise...he finds it hard to cope....think about having children around someone who cannot cope. what messages are they picking up from him?
"only a few incidents the last few days " - that doesnt make it ok... you are almost justifying and explaining him to yourself...well it hasnt been so bad... but you going to be waiting for the next time arent you?
that is when you realise it just isnt worth it any more...