Also not true. Telling your partner that you are not 100% satisfied with them 100% of the time, or telling them that you find other people attractive, or telling them that you fantasize while you have private sexy time to which they are not invited, is about on par with telling them that sometimes you engage in one-person role-play while in bed with them. While these things are true, they are also so cliché that they are essentially meaningless. Young couples might have trouble with them, but I think most older couples know that they are unavoidable and thus don’t bother with them.
A “skeevy thing to do to your partner” would be to not tell them about having an STD or another sexual partner. Telling them about every fantasy that may or may not find its way into your brain during sex is a matter of personal preference and the dynamics of each individual relationship. Of course, always thinking about someone else, fandom-related or not, all the time without telling your partner is clearly problematic, I will give you that much. I suppose, in the end, it’s a matter of degree. Nothing involving sex is ever so black and white.
no subject
A “skeevy thing to do to your partner” would be to not tell them about having an STD or another sexual partner. Telling them about every fantasy that may or may not find its way into your brain during sex is a matter of personal preference and the dynamics of each individual relationship. Of course, always thinking about someone else, fandom-related or not, all the time without telling your partner is clearly problematic, I will give you that much. I suppose, in the end, it’s a matter of degree. Nothing involving sex is ever so black and white.