Maybe I shouldn’t be sharing this but just wondering how you respond to husbands sexual fantasies especially if you’ve never heard of this kind of fantasy?

My husband randomly messaged me today and told me that sometimes he reads erotic stories. I’m thinking “what an interesting thing to randomly message me” lol. So, he sends me one about domination and playing with/torturing balls... I knew somewhat that he liked this kind of thing cause he has asked me to mess with them before.. but I’m thinking it’s more of a fetish. In the story he sent me, the woman is repeatedly kicking and smacking this man in the balls.. the man describes it as painful (so maybe it’s kinda like BDSM?) idk.. He said he feels really embarrassed about it and didn’t wanna ask me to do anything I didn’t want to. But clearly since he’s reading stories about this he must be wanting to explore this and I don’t think I’ve been meeting these needs very well... So, I guess my question is, have any of you ever participated in ball torturing or something similar? Is there somewhere I can read up on this kind of thing? I have pretty much no experience in torturing a mans balls lol. Also, do you you think it’s good that he’s sharing this with me? Or should I be worried?

I just played it off like it wasn’t a big deal or anything cause I really didn’t want him to be embarrassed. I’m probably reading WAYYY too much into this but any advice on helping me play out my husbands fantasies would be greatly appreciated!