@luithe I know the feeling, your cortisol levels spike after a certain time and if you can push past that you can keep going. Then after climaxing I get bad anxiety for the next couple days until my testosterone levels go back up. It’s a cycle and eventually you just accept it.
Then if you climax while having sex your brain goes crazy with dopamine and the mate guarding chemical. You crave your partner for more. Even though with romantic relationships with women their a commodity.