I'm sure everyone knows I masturbate, being that I'm human and all. Myself, I'd be much more shocked to find out that a person *doesn't* masturbate!
Single for now, but when I was in a relationship I would sometimes finding myself masturbating in the company of my girlfriend if she could for whatever reason not join in (recent dental work, on her way out, etc) and vice versa. Plus, even when in a happy sexual relationship, sometimes I just know exactly what I want and want it too fiercely to be troubled with explaining it to someone else
~Mme X~