6 years.

I Met my wife when she was attending college in the town I had lived in for 10 years, She had a friend she met in college in her first year but her friends last year so they only had one year of college together but became very close and were BFF's for years after, We spent a lot of time with her BFF and her long time boyfriend even though they lived 5 hours away we would visit back and forth often. As it turned out her BFF who I will call.....Nicole got divorced 2 years after getting married after she caught him cheating.
She had come to our house to visit and the two of them were getting drunk on the deck, I got home from work and joined them, We went to the bar and then home and had more drinks on the deck and Nicole blurted out that she hadn't had sex in 8 months, 4 since the divorce and 4 before which put her onto the trail that he was cheating, My wife asked why she hadn't met anyone and Nicole blushed, She said "Well...I have talked to some guys but when I tell them what I want in bed they usually aren't into it", My wife lifted her eyebrows and looked at me then said "Oohhh...Ahem...And are you into something we don't know about", Nicole said "***** was rough in bed, I met him when I was 16 and he basically conditioned me so that I can only get off if it's rough", My wife looked shocked and then Nicole said "I like some stuff that is maybe not mainstream but it's the only stuff that actually gets me off", My wife started asking more questions and she laid out a lot of stuff, She said "Ok well...Where do I start?" and she listed off stuff.
This is her words.
1) Being pounded hard...Like just fucked hard.
2) Being talked down to during sex (Stupid slut, Dirty whore, etc.)
3) Being face fucked, Like just grab my head and fuck my face.
4) Being degraded, He would cum on my face while I slept, Stick stuff in me and leave it there if I was passed out drunk like a hairbrush handle or nipple clamps.
5) Being shown off, He would make me wear see through shirts or short skirts with no panties but I would only do it away from our home town.
6) Being shared (My wife got wide eyed) I only did it a couple times but he made me suck Marks dick in the garage once, Made me fuck his business partner twice and a stranger in a parking lot once.
My wife was shocked to say the the least, She was like "WTF!!!! I have known you for 4 years and didn't know any of this", Nicole said "Well...I'm not proud of any of it but it is now a part of who I am". We all talked and laughed and my wife tried to offer some solutions and the two of them looked up dominant partner websites etc. This was before online dating was real big, I went and crawled into bed and my wife came along 20-30 minutes later, She woke me up and we were making out, She got on top of me and looked down saying "What would you do if I told you to go cum on Nicole's face tonight after she fell asleep?", I was wary of it being a trap so I just laughed and she said "For real, I asked her what would happen if you did and she said she would love it", I wasn't really falling for it and we just rolled around making out and then she got out of bed and left the room, She came back and said "Come with me", She led me by the hand tip toeing to the spare room and opened the door, Nicole was laying in bed snoring lightly and my wife said "Jerk off on her face".
Nicole is about 5'6", A little chubby with huge tits and is reasonably attractive, I put up a little fight but my wife kept telling me to and raising her eyebrows at me, I went for it and dropped my underwear, She knelt beside the bed as I leaned over Nicole and dumped a huge load on her face, My wife's eyes got huge and she looked up at me, Nicole moaned a little and lifted her hips, She licked her lips and smacking her lips moaning then rolled over, My wife and I went back to our room and she was just drunk and giggling and said "Holy shit, I can't believe we did that, Did you see her lifting her hips, She actually enjoyed it". The next morning I got up and made coffee, My wife came out and maybe 10 minutes later Nicole came to the kitchen, She looked at me, Gulped and then looked at my wife, She had dried cum in her hair and my wife turned beet red, and said "I was there...It was my idea", Nicole gulped again and my wife said "Do you want to kill me?", Nicole said "No...No, I actually want to masturbate in your shower now", Her huge nips were standing straight out and my wife bit her lip, Looked at me, Looked at Nicole and said "Or he could fuck you while I watch", Nicole croaked "Ok", My wife and I didn't waste any time and she led Nicole to the bedroom while I followed, Nicole said "Be mean to me".
I walked up to her and my wife sat on the bed, I grabbed Nicole by the hair and said "Why aren't you on your knees?", Nicole said "I'm sorry sir" and knelt down. My wife watched the whole thing while Nicole sucked my dick with me slapping her face...gently of course, Then I stood her up and laid her on the bed, My wife held Nicole's hands together above her head while I fucked her hard, I slapped her tits, Spit n her mouth and told her "You belong to us now", She nodded and said "Yes sir", I fucked her doggy and pinched and pulled her nipples hard, She came moaning "God your dick is huge", I put her on her back again and fucked her then pulled out and my wife was on her knees rubbing herself and came at the same time as I came on Nicole's face while jerking myself with one hand and slapping Nicole's wet pussy with the other, Nicole moaned and said "No, No, No" and then moaned loud as she squirted. My wife came as Nicole came and then she was rubbing herself and I pulled her hand away from her pussy and rubbed her hand across Nicole's face then put her fingers in Nicole's mouth and Nicole sucked them while looking up at me with her big brown eyes.
We spent all day fucking Nicole and it was WILD, I fucked my wife doggy with Nicole on her back watching from underneath and then pulled out and let the cum drip out of my wife onto Nicole's face, I fucked Nicole a couple more times that day and we all just walked around naked, My wife and Nicole were at the table drinking coffee and Nicole got up, Poured a coffee and set it on the table, Before she could sit down I bent her over the table and fucked her right in front of my wife, Nicole said "Oh man, I don't know, My pussy hurts", I said "Good" slapped her face a little and bent her over, She squirted all over the kitchen floor and then I made her clean up her own squirt naked while we watched.
It was a crazy day and that ight we all just went to bed together, I woke my wife up around 2:00 am and told her to sit on Nicole's face, She straddled Nicole as sneakily as she could and rubbed her pussy on Nicole's lips, Nicole went to reach up and I grabbed her hands, I whispered in Nicole's ear "If she doesn't cum I am going to fuck you in the ass". Nicole got a scared look and shook her head no and started licking, Unfortunately my wife came and when she laid down beside Nicole, Nicole's face was all wet.
Nicole went home the next day and the two of them didn't talk for a week and then Nicole texted and said "Do you hate me", My wife said "I want you to move in", 6 years ago Nicole moved in with us and she has trained my wife to be much like her, I have two women.
1) 5'8", 155lbs, DDD tits, Brunette.
2) 5"3", 130 lbs, C tits, Dirty blonde.
And I dominate both of them every night, It has been amazing and a dream come true for me, I actually love both of them and we have a full throuple relationship even though my wife and I are married and Nicole is not married to either of us, My wife loves to dominate Nicole and be dominated by me, Nicole loves to be dominated by both of us, I have walked in on just the two of them and my wife has walked in on me and Nicole and just joins in. It's perfect.