I also masturbate with my partner. We do it not just to see, and show, exactly how we like to be touched but also as an exercise to build trust. It’s an intimate experience people rarely share with each other. It’s difficult to show and express yourself in that way without feeling self-conscious. But the more trust you and your partner build, the safer the space for the two of you to explore your sexiness. Masturbation can be a shared experience that makes both people feel sexy.