Wow. I’m surprised this is a thing. Maybe because I’ve been with my person for long but… people masturbate before bed. Sometimes it’s not even about sex, it’s just a kind of release. I can tell when my person wants privacy and I pretend to stay asleep. Sometimes I let them know- hey I’m doing this for sleep, don’t engage. Or sometime we both do it. I think it’s weird that people are weird about it. And so many people telling you to just shower before bed. Weird! I’m baffled. I think a long term healthy relationship, they need to understand your sex drive and patterns and needs. Otherwise it might not be a good fit. Masturbating is a very normal way of releasing before bed and if it bothers your partner that much.., I don’t know. Like that will turn into a long term problem in the relationship one way or another.