Taboo Thoughts During S*x

Am I the only one who experiences this, or is it more common than I think? Sometimes, I find myself imagining what a couple’s sex life might look like, or what a person’s body might be like. I think it’s driven by curiosity, and I focus on it for a few seconds. When it comes to family members, teenagers, or anyone I feel uncomfortable imagining in this way, I used to be able to shake it off as an intrusive thought. But lately, I can’t seem to let go of it anymore. I’ve become used to the anxiety, but I’m stuck questioning what this means about me, especially since I’ve taken time to think about it. This is really stressing me out because I feel like a pervert. I’m hoping that this is something more common than I realize and that OCD is just distorting something. I feel like I really need some insight here. Any advice?

So I was enjoying some “me time” and had intrusive thoughts, but it felt like just for a second I liked it. Like I’m holding myself back from “enjoying” the thought. And the thoughts are related to things I was into when I was younger, but sometimes I feel like I might still like it even though 9/10 I wouldn’t give it a second thought. Is this common? Or is this just denial? Thanks

What do yall do when yall think of past partners or other people during intercourse with your current partner. I ended up confessing that to my partner and it’s damaging the relationship or making things really difficult. Having a really hard time trying to control the thoughts. I even think of other people while with my partner. Any advice or anyone with similar experience?? Please