She might be ready

I'd bought my wife a bigger dildo a couple years go, its like 8" long and 2" around. She'd had a smaller one but it wasn't very real looking. This one is VERY real looking. Unfortunately the first time we tried it I wasn't gentle enough and it hurt her and she wouldn't touch it again. Fast forward a couple years and I get her real hot one night and grab the big dildo and start rubbing her, I used alot of lube and went slow and when I got it in she went bannanas!
Now every time we screw she wants her "big boyfriend" to have a turn. Her pussy is definately starting to stretch out from this treatment and the whole time its in her she wants me to call her a dirty slut.

We've talked alot about getting another man to fuck her and now she says when we do (not if, when) that he's got to have a big dick like her toy. My cock is not small, about 6" but she just loves that big one. I think she's nearly ready...

I would say she is very ready, mate! My cuckolding treatement started just that way...my wife actually bought the first dildo herself at an all-girl's party.

When we started using it she gave "him" a name (of an old boyfriend) because she said the size (about 9 inches) reminded her of him. (I am about 6 1/2") As we progressed into the cuckold lifestyle she made sure she called the dildo by the old boyfriend's name and noticed that it had a very "hardening" effect on my own dick as she would make love to her artificial "lover". This told her I was actually enjoying her doing it, and then it was she who started on the sly suggesting that some guys at work were coming on to her and "what should a poor married girl do?" After all, some of them were "very attractive" and were "turning her on"....she was just looking for my approval and once I said "O.K, honey, you can go on a date" the door was open. She has cuckolded me ever since, enjoying the effect it has on me. She has fucked numerous guys and has relished telling me about it and even has invited me to be with the two of them as they ravish each other. She is a total bitch, but she totally owns me, and I love her and wouldn't want her to be any other way. She knew the right buttons to push, and BOY, has she kept me under her spell for years and years. This woman can do just about anything she wants to do to me, and all I can do is love her for it, no matter how much she may want to humiliate me! My biggest pleasure in life is when she allows me to suck her toes while her boyfriend fucks her and she talks dirty to him in my presence. She will tell him things like "That's right, fuck me harder...I want to make my husband watch...fuck my pussy hard....harder, harder!!" I love it!! What can I do? It's my fate!!