Should I have dinner with my girlfriend and my ex?

Well I think the main thing to consider is how your girlfriend feels as she is the one who has to sit down at a meal with you both, probably knowing that you weren't the one who broke things off and that you may still have some feelings for your ex.

 However, if your girlfriend is fine with it (which it sounds like she must be) then I see no reason why not to go for it. If you go out and have a great time it doesn't matter who it's with, but if you do feel bitter just realise that you're now in a happy relationship which you wouldn't be in if your ex hadn't split up with you. The better the time you have the more likely the ex is to see that she may well have made a mistake dumping you in the first place. Providing your current girlfriend is ok with it and you can put up with having dinner with two girls you know intimately then I see no reason why not.

 Just be careful that you're not left sat in the corner while the two girls spend the whole night gossiping!

Good luck 

Well I feel and understand what you are saying, although I do not agree. I think it's a bad idea to go, according to your story. It seems to me that the ex doesn't have feelings for you anymore which might be a good thing, and apparently you got more attached to her than she did to you. I don't see anything good coming out of this especially if you still feel a bit bitter about the whole experience with her.. I think it might bother you to see her again it the whole situation might be fake.

I think people in general should move on with their lives and the whole defenition of an "ex" is that it is in the past. Thus, eventhough it wasn't that serious (although it obviously left an impression on you) I'd advise against it.. just be happy with your new girl and move on...

eventually, you need to do whatever feels right.. Good luck

Well honestly I think that this should be a safe evening for all 3 of you. Maybe your ex feels a bit guilty about the way things ended and this is her way of making it up to you, to help you gain some good points with your current gf. This for your current gf should be great because if there were anything bad or really awful to be said about you, the moment your ex realized who she was with was you she would have told her. For you I think it will be great because if you are willing to go to dinner with your current and you ex together then clearly your current will know hey this guy must be the real deal if he is cool with this idea and your ex will know that hey your willing to put the past behind you. Hey maybe this will open the door to a really cool and healthy friendship for all 3 of you. So I say go for it.

 Good Luck

Don't even think about it. It's a failed relationship. Let it go. If your girlfriend has a relationship with her, fine. But you spending time with her has no future. Let your new relationship grow, and if you ever find yourself in a room with your ex, be pleasant, but it's energy flowing the wrong way. Enjoy and develop something with a future.

go. if you avoid going, your girlfriend's gonna think you still have feelings for her. the only reason you ain't going is because you haven't gotten over the bitterness yet and you're afraid of awkwardness. if you have, then your ex is only a friend. there's reallie nothing wrong with having dinner with your girlfriend and a friend. but that's only if you believe you have truly let go. even if not, you should still go or at least talk to your girlfriend about it, whatever it is. she's gonna appreciate your honesty. if you feel weird about this whole thing, then just tell her about it and never give her one single second to guess.

I would say if you have nothing to hid from your new gf then you should go jus to insure your ex that you want nothing to do with her but maybe be friends. That would also insure your gf now that she can be friends with your ex and you are ok wit that cause you want her.