Would you go to this wedding?

I'll try to make this story as simple as possible, but we've got a complicated history!

My ex-boyfriend/ex-quasi-fiance is getting married at the end of August. We haven't been together in almost 5 years, so our relationship is pretty much water under the bridge. We grew up together, our parents were friends, yada yada, I'm going to know everyone at this wedding.

He's getting married to a girl whom he's been dating about 6 months, but I guess it doesn't suprise me as he was always very marriage minded and is getting a lot of pressure from his family/ our home town/ etc. because he's already in his 30s. Anyway, I guess that's not relevant to the story, sorry.

What is relevant, is that I've never met this girl, or heard anything about her. She, I'm sure (and I apologize in advance for this sounding conceited) has heard a lot about me, simply because his family is convinced I was the one who got away.

So... we talked the other day and he wants to invite me to his wedding. I told him that I'd like to come, but only if his fiance is comfortable with it... I don't want to be the gigantic skeleton in the closet that shows up on what's supposed to be the happiest day of her life. He assures me that it will be fine, but I'm still up in the air about it.

Also... part two: I'm getting married 3 weeks after he is (kind of freaky, hey?). Should we invite him since he invited us? It would be great to have him there... he's always been a great friend, and like I said, our relationship is ancient history as far as Mr. Ginger and I are concerned. I am a little worried about the whole family deal though, and people wondering "Isn't that the guy.....?"