Well, here's the (relevant) part of what I wrote back to him.

Dear Michael,

I'm so excited to hear that life is going so well for you! Yup, 3 weeks between your wedding and mine! I'd be honoured to attend, but, I want you to know... I only want to come if BOTH you and your fiancee are comfortable with it. I know it's been a long time since we've seen each other, and the last thing I would want would be for either of you to feel the slightest bit uncomfortable on the happiest day of your lives. So bear that in mind, and discuss it. If you do still want to send an invitation, I'd be happy to accept!

My address is:
(address)

I'll need yours as well!

(blah, blah, blah, non-related stuff)

So I'm dying to know about your fiancee. What is she like? I'd love to meet her but I'm sure if your summer is anything like ours, it's pretty unlikely! So you'll have to tell me all about her in the meantime. I'm glad to hear your family is doing well, too! Is Aaron still in the Navy?

(more blah blah blah)

Well, I suppose I shouldn't talk your ear off. I hope to hear back from you soon. I'm so excited for you, and give Missy my best wishes too!

Ginger