I was very naïve in my early 20s and already married to a beautiful lady. My kinky mother-in-law seduced me one afternoon and took me to bed fucking my ass for the first time with a strap on. She kept our secret, but invited me over once a week, fucking me on a regular basis.
Nothing like an en experienced woman, knowing how to drive her point home, then having her way with her man, probably going to give him a spanking to boot.