Keeping It In The Family

Frank doesn't have a big cock at six inches long, but it is really thick. I am fairly well hung.
And every Wednesday and Saturday mornings, he calls by and fucks me with it.

There's no messing about with Frank either, as he likes me to be showered, shaved down there and already lubed and naked.
Usually he walks into our home, has me get into the position he wants to fuck me in that particular day, takes his clothes off and slams his already hard cock straight up my arsehole.
Some days he'll fuck me for only five to ten minutes, but mostly its around twenty or so glorious minutes of taking his thick dick deep inside my boy hole.
And he's been fucking me since I was seventeen.

The reason he fucks me on those days, is his daughter travels to her head office every Wednesday and plays golf every Saturday mornings.
My wife, Frank's daughter, is fully aware her father is fucking her husband twice a week. Indeed we first met at Frank's old flat when she walked in on her father fucking a then nineteen year, old on Franks sofa.

I was immediately attracted to his daughter being bisexual, but she wasn't obviously too pleased to see her dad fucking a young guy.
Even so, a few months later we met at a party and began talking. I already knew Frank and her mum were divorced because Frank loves fucking guys too. What I didn't know, is his daughter had the hots for me.
We ended up dating and I stopped having sex with her dad.

Only several years later after we tied the knot (both aged twenty four) did Frank begin to fuck me again.
It was in between Christmas and new year at his new home. We'd all had a fair bit to drink and my wife was tired. She went to bed in her fathers guest bedroom and Frank and I fucked on his sofa. She came downstairs and once again caught us fucking. Instead of being angry, she told us not to fuck when she was around.

So we now fuck twice a week (Sometimes three if I have to travel into work. I work from home).
My wife knows I won't have gay sex with anyone else. And she also knows her father is extremely happy too.

My wife and I have sex almost every day, so as far as we're all concerned, it's a win all round.