I'm the best man at my best friend's Floridian destination wedding. We've been friends since middle school, and in general, we can confide in each other just about anything.
Over the course of the week (many of us came down early to make it a vacation), we've spent lots of time as a group, doing the whole Florida gamut - Disney, beaches, nightlife, etc.
However, during all of this, it's come to my attention that my friend's fiance isn't faithful to him. I've seen her flirting with other men when my friend wasnt around; at first I thought this was just friendly chit-chat, but one night, she attempted to get in bed with me, while my friend was still out.
This was done in no uncertain terms; she literally stated that she "wanted to see how I performed in bed." In addition, I didn't smell any alcohol or anything, so I believe this was just her being her.
Of course, I refused. When I did, she became irritated, and stormed out. Since then, she's been practically glued to his side anytime I get close to him, and I haven't had the chance to pull him aside and confide in what happened.
This is my best friend, and I truly wish him happiness - but I feel that he needs to know his fiance's unfaithful behavior. It seems that he doesn't know right now.
Unforutnately, it seems more and more likely that the only opportunity I'll have is at the wedding itself. When the priest asks "if anyone knows any reason why these two should not be married" (or whatever it is), should I object?