>>2565 (OP)
I would suggest you find a way to bring this up with her. If you don't trust her enough to bring it up, you should reconsider what you are doing because you shouldn't trust her with your intimacy.
I do relate. When I had my first gf and in turn lost my virginity, it was bliss. It was like I had a great friend who I could hang out with all day, and sex was like a cherry on top, an ornament.
Like you fuck, hang out, fuck, hang out and it all compliments eachother. Then that ended, and you have sex with other people, and you slowly find it all gets inverted. The people aren't compatible, and its not about being with a human, and you catch yourself chasing sex in itself.
For me it got too far and far too degenerate, and I am hugely ashamed of how far I have let sexuality corrupt me. You need some guidance in your life, if nobody around you really cares, you won't know until it is too late.
Maybe it takes ego death, or some kind of drug trip or lots of philosophy but you have to start to question why even feeling good from cumming even matters or is good itself. What is good in itself about cumming? Its more a con to get families together so that children can be raised. But then is it really a "con"? Since that assumes the main reason to live in the first place is to cum.
Most people stop just at "it feels good". Why should I care?