My husband wants a threesome but I don't
Dear Edahn,
I understand your dilemma, but you can't have "complete openness" if you don't feel comfortable saying no when you're not into something. Your declining his offer doesn't have to be a big deal. Just do your best to do it casually and get the conversation back on track.
You could amiably reject his proposal and request a new one. You can also say something like "I'm not really into that, but I did like your other suggestion of..." You could even propose your own fantasy: "I'm not keen on the lesbian thing, but what if we tried [including a gay guy?] instead?"
Adding a little humor will also help soften the blow. (Regrettably, I have the sense of humor of a 13-year-old Austin Powers.) You could try something like: "I thought about it, and my answer is yes." He says "Really?!" and you say "No," followed by "What do I look like? A fucking wish-granting genie?" Option 2: "Nope. Better go return that new video camera and professional editing software." Option 3: "It's not that I'm not into lesbians, it's just that their penises are too small for me."
In the end, it's fine if you don't want to do something, especially something unconventional. Even if he gets disappointed for a little while, that's okay. He'll bounce back in a few days when you send him another salacious text message from the toilet. ;-) And no, I don't think there's anything to be ashamed of. It's just healthy role-playing. Filthy, perverted, immoral role-playing.
You might want to revisit the issue a little later once the lines of communication are more sturdy. I'd suggest doing a little introspection to pinpoint exactly what makes you uncomfortable about the situation and going from there. It might help to talk with your husband about your concerns. And you're welcome in advance. Please feel free to write in if there are some other issues you're having and please share the blog with some friends. That's the best way to show appreciation. Cheers!