Super happy to read others have discovered this as well, since it has been a life saver for my sex life. I noticed over time we were having less and less intimacy in bed, and it felt like my partner was avoiding to touch me. After a long talk he revealed he secretly masturbated to get rid of his sexual tension because he didn’t want to put stress on me. Sweet but at the same time it killed our sex life. A friend of mine came up with the advice to ask my partner to stop masturbating behind my back and actually do it in front of me, which gave me the option as you guys already wrote to either help him out, join in, or do whatever I feel I want to. But at least I feel involved now and it has done wonders to our relationship! It’s not easy though, cause it requires lots of trust, communication and time!