A Secret Nighttime Fantasy

I've been married for six months now and we have a healthy relationship, but there's something I never talk about. One night, while my fiancé was asleep, I secretly used a toy that he doesn't know I own, a realistic dildo with a harness. I spent hours exploring myself in the dark, feeling both excited and terribly guilty. It felt so wrong to enjoy this alone when we share everything else. I couldn't bring myself to tell him or even admit it to myself until now.