Hello, people. It's hard for me to put this into words (soon you'll see that's the main problem, actually), but I'll give it a try.
We're both in our early 30's and going steady in our relationship. Everything is ok. And we always want to make everything better than ok. So... Regarding sex, lately we've been spicing things up a little: costumes, roleplay, public places, etc.
But I have this fantasy I just can't seem to share with her. Sorry if I'm being way too explicit, but here's the situation: a couple weeks ago, while sucking me off, she told me she loves my cock. I have a modest 4.7", so I told her if she was curious about sucking something bigger. She replied "it is perfect the way it is" and kept going. Later on, I was taking her doggy-style and began to told her how much I'd love to see her with other guys. She didn't say a word.
Last weekend, we were watching some amateur vids, and she got kind of upset when I played one of a girl blowing two men. Everything suggests that she's not into threesomes, not to mention cuckolding.
Of course, I'm well aware that some fantasies are better kept as fantasies. Making them true would change things drastically. And this sort of things, in particular, mean exceeed a point of no return. And I admit that it would destroy me to see her with another man.
But, as a fantasy, it drives me crazy. And I'd like to share it with her. On that same fantasy level. The hardest part is how to talk about this, and how to convince her of at least trying it (I mean, trying it as a fantasy, not as something real).
Is there any advice on how to approach this subject?
Thank you in advance for reading. Depending on your replies, there's a couple of other things I'd wish to add. But first let's figure this first part out.