My wife is about three hundred pounds but still very flexible even in her forties, I am obsessed with bondage and giving her orgasms, she is very willing to be the subject for both.
I also have a confession. I get her tied in a doggy position, she is practically rolled up like she is doing a somersault and I pull her breasts out to the sides and tie her nipples off for just a hint of discomfort, also they are very ticklish.
We have a neighbor who is not married and in his forties also, after she is very wet and turned on I text him to come over and she has no idea who is fucking her. She is bound and blindfolded, I play music up sort of loud and sit there watching him fuck her and play with her ass. He loves to pull on her nipples until she gasps out saying things like OH! Too much! He flicks them with a finger and loves watching them twist around.
She cannot get pregnant and I told him to always leave his nut in her pussy, just turns me on to see it I told him but I actually enjoy licking and sucking it out. I might suck on him one day but not there yet.
When he finishes and leaves I put a vibrator on her clit and make her orgasm so his cum gets squeezed out from the orgasm, love seeing her struggling against the bondage to get away from the vibrator, tickle her nipples and listen to her gasping and grunting the whole time.
She loves being used like this for some reason and has even asked for it telling me she really has huge orgasms from it because she cannot stop the pleasure and that turns her on more and more. So she may not get looked at with desire out in public but in private she is an amazing sub who loves to be used and made to orgasm which is a dream come true for me.
