My wife and I are now in our fifties and from 35 to 48 years old we experimented with a muscular black male a few years younger. I am straight but allowed her to have a guy friend sleep over when she wanted. Average once a week, she slept with him and I moved to the other bedroom. I could hear everything, she was very verbal and she loved the sex. It was such a turn-on for me! She even sucked his cock and fucked him while I watched.