I’m pretty sure repetition is a good thing. How do you get to carnegie hall practice practice practice. Pee on your toothbrush, masturbate with it then brush your teeth rinse and repeat.
How about drink a lot of water wait to you can barely hold it any more get in the shower and out your legs up and pee all over yourself and then don’t clean up till after you make yourself cum
I think its really hard to find the perfect kinky person and if this agreement works why not stick with it. Dont worry so much about the future but deal with the now and if when this start getting complicated you can evaluate the situation then.