Dolly,
I have read through all of this, and whilst I can't offer anything new to say, I just want to echo everyone else in saying you are absolutely remarkable and dignified. I'm so sorry that you are going through this though.
Can you put your sim card into an old phone and get a new sim? Let everyone else know your new number, so that the old number is only used by him? It means that his patronising and grandiose texts can lurk there, unread (unless you want to read them). Urrgggghh what a dick!
I think the script going through his head is something along the lines of 'I know I have hurt you, but it's not really my fault, it's all to do with the thrill seeking you see - but I'll do my noble best to support you emotionally through this, my crushed little flower'.
Oh and 'separation suits you' - don't even get me started! Separation implies an element of mutual agreement. More accurate to state 'betrayal suits you'. Knob.
I am really cross on your behalf.
I add my voice to those who think you would benefit from establishing more boundaries about him using your house for contact - it's causing you so much pain.
Anyway, rant over. Enjoy the rest of the weekend.