Thanks for all your responses. I know I'm the lucky one reading posts on here - I don't have to think about this issue. I both feel jealous of her and sorry for her at the same time (the new gf). She doesn't know he is an A not really - he just told her he was on a detox. I have nothing to do with him but heard on the grapevine 'everything is cool because he is on antibuse. I don't know too much about it but can't think that this will solve all his problems overnight.
I am happy to have moved on. I can't think that this new girl is any more understanding or caring than me, she just knows less at the moment. maybe she thinks her love with change everything ... ahard lesson to learn that it won't.
She will have to have the same feelings of betrayal when she found out he wasn't honest with her.
Thanks for the posts.