Before and after...
Also that NiceGuy stuff didn't last long either, when he realised I wasn't falling for it.
Thing is, the 'improvement' is only him hoovering you back in. It's being done cynically for as long as it takes till you crack.
The only chance you have of him ever changing is by NEVER cracking! Never letting up on him, and he has NO right to complain.
For me, after the tearful begging, the suicide hints, seeing his quickness to blame me somehow said it all.
I didn't let up, not even then. I said that it was over, that it'd never work again, as i'd constantly be reminded of all the crap stuff and hold him accountable somehow. I said that I felt that IF really reformed, he deserved a better chance, a clean slate, and actually so did I.
Time went on, a year or so. Purely functional conversation, passing him to DS, saying nothing to him at all.
A couple of months ago I got the most authentic apology i've ever had. I think he knew he'd lost me, and knew why.
Ok so all academic, as he's still thousands of miles away, but he really did seem to have 'got' it.
Either way, whether he has or not, is none of my concern really.
So stay firm, keep him GONE! Long run, you may be able to have a decent conversation with him, but that depends on him. Til then. Do your own thing!