Yes! I love watching him turned on and vice versa. I like watching his speed, grip etc and love him to come all over my (.)(.)
My husband and I do this sometimes. Not as much as we used to because my sex drive is really high now so I always want him to fuck me. It sometimes starts as mutual masturbation but halfway through I get greedy.
My wife and I do as a part of our overall repertoire. We have sex more often than MM, but 2 -3 times a month do it at the same time. More often is me masturbating with her next to me.
26 and 23 now started years ago. She caught me once and just stood there so next time I asked if she wanted to watch again and she sat beside me. Next thing i know she's masturbating next to me
I used to enjoy sitting together on the couch at night, completely naked, drinking a glass of wine, watching a movie, but without touching one another. And seeing how just how long we could go before tearing into each other. I tell you, sitting there watching his cock grow and grow without grabbing it is painful! ANTICIPATION!