Definetly go on the date Ghost. She has no interest in him so it doesn't matter what he thinks or wants.
My rule with my buds when I was dating was that I always talked to them before going on the date.... not to ask for approval but just to let them know so they wouldn't be blind sided.
sounds pretty unanimous, so im going to throw my "dooo iiitttt" in there. haha.
good luck!
No it is not good to steal a mates g/f, but he started the whole thing off and didn`t care he did it to you, And as he stuffed up with this new girl and she was upset mean`t she didn`t want your mate, So you are not stealing off him as he did to you, So go for it and enjoy yourself.
Years ago I had a mates current g/f ask me to take her out, But as said to her ,No as i don`t take my mates girl. As i am true mate to the friends i have. And it should not be done.
But if he had dropped her and she asked then i would have picked her up as he didn`t want her
But best to pick up girls on your own as mates can get in the way, and you lose the girl to them.