Should I Do It?

I'm still good friends with my best friend from HS and college. Back then, if we got naked pics of our GFs, we always shared them, and even talked our way in to a couple of threesomes. If one of us broke up with our GF, we gave each other permission to swoop in and console the ex so that we could fuck her too.
We both married good women who don't know about our past perversions, but we still share the pics.
He wants us all to get together and get the girls really drunk one night, and swap wives for a couple of hours. We're built about the same, and as drunk as they get on occasion, they'd never know in the dark, and of course, we'd each say "No, that was me and you were amazing."

I miss those old days, and wouldn't mind the excitement of pulling the switch on them, but then I'll also have to keep that secret from the woman I actually fell in love with and married.

Should I do it, just for that one night of strange when neither wife will ever actually know?