Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Our sex life as a whole is quite lackluster. It’s not that the “sex” itself is particularly bad, it’s just not what either of us would like it to be. For starters, we don’t have penetrative sex purely because I have issues with that, and my SO has a lot of sexual interests she is really keen on trying out but is not able to.

She is definitely making a lot of sacrifices as to what she wants when we have “sex,” and I’m trying to change that. However, it’s kind of demoralizing to hear about things that she fantasizes about that I am so far away from being able to fulfill. I know she enjoys talking about her fantasies, but I just don’t want to hear about them. It makes me feel insecure over how inadequate I am sexually.

Beyond that, I can’t mutually share my fantasies; I don’t have many sexual fantasies in general, and really only one that is appropriate to share. However, it would be incredibly unfair for her to fulfill mine when I can’t reciprocate. 

That’s my rationale for wanting to tell her that I don’t want to hear about her sexual fantasies. I don’t know how to phrase it, but for the purposes of judgement how about if I just straight up said “I don’t want to talk about your sexual fantasies because I feel that it is counterproductive to do so.”

telling my girlfriend that I don't want to talk about her sexual fantasies