I think for me personally I would find it weird even more so if we haven't talked in awhile. So I would rejected the offer even if it was some I missed, I feel like going out for a bite to eat would be better so we can catch up.
Most Helpful Girl
I would thank them for the invitation and wish them a happy birthday, but I would probably not go to the party. I haven't spoken to my ex in months. A birthday party would be awkward. If he really wanted to get back in touch, I would prefer just getting coffee together or something else one on one. And my current boyfriend's feelings would be a factor, too.1