Last Saturday I walked into my father in laws Eric's, expecting to find my husband Lee and him discussing the purchase of our new home. Eric is actually my husbands step father, but brought Lee up from an early age with Lee's mum, who's now sadly no longer with us, after her death three years ago.
Instead of seeing them going over an offer on a house, I found my husband lay on his back on the couch with his legs high in the air, and Eric was naked between his legs fucking his step son.
They didn't see me, but I could see everything clearly from where I stood. It was obvious straight away from what they were saying to each other, it wasn't the first time they'd fucked. As Eric was telling Lee to "Take my cock like the slut I know you are". As for my husband he was responding by telling his step dad to fuck him harder.
It wasn't easy at first to watch them having sex, but strangely I became more and more into what they were doing. Although tempted at first to burst in and challenge them, I stood back and began to enjoy the very real scene in front of me as they continued to fuck.
Eric began to slam his cock really hard into my husbands arsehole, and seconds later Lee's cock erupted, spurting cum all over himself. Eric told him he was nearly there and it was then I realised I was so turned on, I'd begun to touch myself. As Eric came deep inside my husbands arse, I so wished I could have been a part of their extremely horny sex.
Sneaking out before they noticed me, I drove back to our rented flat, got undressed and played with my pussy and clit on our bed. Furiously frigging my love button until I came in a torrent of pussy juices, thinking of them fucking one another.
When Lee got home I didn't say a thing, but I so desperately wanted to. I still haven't said anything, but knowing Lee is visiting his father on Friday, I'm now wondering if I should let on if know all about them, and see where it leads.