Call me naive or old-fashioned, but I am completely against this act of unfaithfulness. Marriage is about two people who love each other, and choose to remain faithful to one another. Their bodies, their hearts and their souls are exclusively for each other. This also applies to the couple before they are wed. Aren't two people in a relationship supposed to be loyal, too? So if, during a bachelor/ette party, you decide to do the deed with someone else just for kicks, doesn't that show disrespect for your partner? It's like trampling on your relationship for a moment, just so you can have one last bit of fun before you tie the knot.
It's sad, really. After I heard my friend's story, I truly felt sad for the bride. Does she know that her husband-to-be, the man who promises to love ONLY HER for the rest of his life, went "all the way" with another woman just a few days before he says 'I do'? Does she have any idea at all that this man who swore to be faithful just kissed, embraced, touched and became intimate with someone else? I bet if she knew, if she found out, it would break her heart. If she and the groom switched places, if it was she who slept with another man just for fun, would he take it lightly and say it's okay? I seriously doubt that.
When it comes to love, relationships and marriage, have loyalty and respect become out-of-date?
The lover is a monotheist who knows that other people worship different gods but cannot himself imagine that there could be other gods. ~Theodor Reik, Of Love and Lust, 1957