Thanks Girls for your replies.

Sigh! I know if roles were reversed I would be offended if DP wasnt invited, but aaargh I dont know how to say what Im thinking...

Smiles4u- Unfortunately(well probably fortunately) he isnt a rampant alco so I cant use that one but I see what your saying with all partners or none, thats a pretty good call.

Aliash- Some good things to ponder, I know for a fact she would be offended if I didnt invite him as when we were in Melbourne last we were meant to have a girly catch up and he wanted to come along(controlling, possesive and emotional abusive hence me calling him a douche) but I said that I wanted it to be just her and I and she got a bit funny so I kind of dont want to have that happen all over again...And they would be coming from vic to qld.

I guess Ill just invite him and hope for the best...