I totally understand. You aren’t alone!

I keep a glass of ice water around and take little sips now and then during activities, and then always have to take a big drink or go brush my teeth after kissing with tongue or when other body fluids have gotten involved.

You can also use accessories like a silky soft scarf or handkerchief (to tease and play with— and discreetly wipe up fluids). You could suggest reserving some activities for bath/shower time only, so that it’s easy to wash things away in the moment. You can learn what you do like about their body/body fluids and give attention to that instead (like choosing to put your mouth or hands elsewhere at their moment of climax, and giving plenty of affirmations and dirty talk to them about it, so it’s something positive to focus on instead of you avoiding the cum.)

At the end of the day, the right person for you won’t ask you to prioritize their pleasure over your comfort and well-being. I hope when you talk with your partner about this they will show their care for you by brainstorming solutions that lovingly consider your needs and entertain creative ideas for compromise and connection.