fth, Oh, yes. They will amaze you with their incredible feats of selfishness. My W stopped being a mother to both our D's (14 and 19). First, she would "forget" to go to a parent meeting at school (after we had talked just 2 hours before it started), then she would tell me that I was a bad parent because I watched a horror movie with my 14 year old D. Another thing they do is treat the kids like they are younger or older than they are. She would treat my D14 like she was much younger and has pretty much just stopped caring about D19. My D19 said that it's like she thinks there is no way she's her D because, in her mind, she's WAY to young to have a 19 year old child!
Have you read the DB book? If not I suggest you take the time, it's worth it. You are still in denial and anger but you will get past that. Oh, and be careful about texts and sending the wrong ones. I did that too and got hurt by it. It's hard because our minds are fried I know but one wrong thing with an MLCer and they will blow sky high and never care about what they do.
Hang in there fth. You can and will make it through this!