Threesome with one of her female relatives

"Well, since you're bisexual, it could be fun if we invited another girl to join us. That way, both of us get to experience something new," you begin.

"And well, if we're really serious about this, every guy dreams of banging his girlfriend's hot sister. Or her mom, even. And well, your sisters are really good-looking. And you've said yourself your mom has barely aged a day since she had you," you point out. "Plus, that way we know it's someone we love and trust," you add.

You never would have dreamed you would say this out loud to your fiancee, but at the same time, you never dreamed she'd offer you sex with someone else. So you mentally cross your fingers and pray she will bite.