What difference does it make? He's the one going on a kick-ass vacation with her later that day, and he's the one she chose to spend the rest of her life loving.
I'm inviting my high school sweetheart and his wife, and a friend it just so happens I used to fuck. My dude already met the latter, and really dislikes him. (I'm the only liberal for whom he has room in his Fox-news lovin' heart.) Still, he knows I have a lot of platonic love in my heart for that guy, and he trusts me to keep any promises I make. I could fill that banquet hall with former lovers, and he wouldn't care, and wouldn't question me. Why should he?