Oh poor you, op.
If it helps, years ago my DH left me, and I remember that awful, terrible, heart breaking pain, the begging, the texting.
He left me for another, came back 6 months later, we had our DC, left me for the same woman 2 years later... they are now married, with other children.
I regret having taken him back just for him to do it again in the future.
You partner is doing the exact same. Please don't brush over your first thread because of your heartbreak, everything you told us about him is who he really and truly is.
He was talking about strippers and other women, he's was disrespectful and horrible to you - even if you were hard to live with, as you put it, which I bet you were not, it doesn't excuse blatant disrespect and making you feel like he did.
I wish I could link your first heartbreaking thread, as it happened in real time.
You know who he is really and he is proving it to you the whole time. You're hurting and in shock, but people and relationships like this rarely change.
Don't be me, don't take him back just to re-live it again years later, the next time is just as painful, if not more, and all that time wasted.
Please leave it be, and focus on you.
(And if you want to know what brought my DH to coming back, it really was radio silence and he came back begging to come "home".
I wouldnt recommend this, as they'll only do it again, per my own story.
Not to mention your partner is a obvious and total twat)
Sending you lots of support and hugs, op.