This happened when I was 19-20 and she was in her late 30s.
I'm 6'2, with a slim build and have broad shoulders and brown skin, this happened in Toronto at M4 sex club.
After I had changed into a towel, I went exploring. That was when I saw her, she was on her knees sucking her husband. Her blond hair was in a pony tail, she had a big ass which was hardly contained by her blue lingerie.
I asked them if I could watch, they said yes and I took a seat next to them. I saw her bob her head up and down on her husband's cock. There was a tent forming under the towel. I asked them if I could stroke my self, once I got the go ahead I whipped my cock out and started stroking.
She started eyeing my cock whilst she was sucking her hubby, we made eye contact while her mouth was stuffed with her husband's cock. After a while, her husband said " Why don't you help him? ". That's when she kneeled between my legs and stroked my brown cock.
She took the tip of my cock into her mouth sucking on it before taking more of it, she took my cock out of her mouth and started stroking it using her spit as lube, she then proceeded to lick my balls sucking on one before moving to the other. I noticed her wedding ring, that really turned me on.
She took the tip of her tongue and ran it on the back of my cock before devouring my shaft into her mouth, I looked over and saw her husband stroking his cock looking at his white wife sucking a brown cock. She then started cupping my balls as she went to work on my cock looking right at me and I started to feel her breasts through her bra, they were big and full and her nipples were hard.