This was last year on summer break.
My wife (then 39F) and I (then 36M) were hanging out at the beach not too far from where we live (walking distance).
Anyways this guy (24-26M) was so obviously checking her out but saw she was with me so didn't approach. I pointed this out to my wife and asked her what she thought of him and she said he's hot.
I went over to the guy and asked him what he thought of my wife and he told me I'm a lucky man. I then explained our situation about her having hall passes and me watching.
He goes over to her and they start flirting and talking a bit. My wife eventually gives the go ahead that he's coming home with us and off we went.
As they'd been in the water .etc they wanted a shower so they got in together and I had a seat in the bedroom.
She later told me that they got in and started making out .etc and washing each other off.
Not long later they came into the bedroom towels on and started making out hard. They then dropped the towels revealing her amazing body as well as his already rock hard 7 inch cock.
They made out some more naked before she laid him down on the bed and started sucking his thick cock. After a bit of this she grabbed a condom and put it on her lips before using her mouth to put it on.
She then got on top and his dick slid into her and she started riding him. Her curvy body and massive e cup boobs bouncing which he was grabbing and slapping. He then grabbed her waist and thrusted from underneath as she rode harder moaning. She came before getting off and taking a breath before he got on top and slid his dick back in my wife.
He absolutely railed her for a good long while before she came again and kissed him before they both sat up and she sucked his dick more before he got her into doggy style.
He then gave her another pounding before he was close and so pulled out, flipped her onto her back, yanked the condom off and blew a massive load on her boobs.
They got cleaned up we talked and had drinks for a while before they went another round and he left soon after that.