My wife knows that I masturbate, & I know that she likes to spend some 'special time' with her favorite toy. It's no big deal, we're very open with each other and have been married 21+ years.
A related digression--I had a testicular infection a few years back that required a hospital stay involving extremely potent antibiotics. In my follow-up care my urologist said that ejaculation every two days (with my wife or alone) was healthy because it cleaned out my male plumbing and kept my testicles from laying around doing nothing. So I'm just following the doctor's orders
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