It sounds as if you are violating lifestyle rule number 1 "protect your primary relationship at all costs" and lifestyle rule 2 "Do not enter into the lifestyle in an attempt to rescue your primary relationship". This is NOT going to make things better between the two of you. This is just a part of the long fall to the inevitable crash unless you two find a way to fix your relationship through legitimate counseling, etc. As for any "rules" regarding you not having sex with other women, ignore them. Tell her so. Be a MAN. Despite the fact that this is a site with much "cuckold" activity (and I love it, no criticism), the biggest mistake I see from this site is guys who want to be "cuckolds" and somehow think that means being wimps, acting like simpering pussies, denying themselves sex, denying a sexual relationship with their spouse, allowing other men to simply steal their wives (in some cases we read here) and being "beta-sub" males at the expense of their own families, putting perverse sexual fantasy above their own families and relationships. Sorry, just a woman's point of view, and my husband and I are as experienced as any in this lifestyle. I would tell you to stop whimpering on here and either tell her to go, give her your blessing and suck it up, get pics/etc or tell her in no uncertain terms that this isn't happening. One or the other really.
You could just acknowledge that she cheats, agree to act like you don't know or don't mind and go on with your relationship. Cheating isn't necessarily a bad thing, especially when there are only certain needs in a relationship that need ENHANCED and NOT REPLACED. Listen, I cheated on Mr HW from LITERALLY our wedding day. He knew about it, I told him on our wedding night (unfortunately after I had already cheated) I was going to be unfaithful with my body but that I would be totally faithful with my love and never brought it up again. He didn't say anything but I meant what I said. He caught me several times, suspected me (rightly) many others and stayed quiet about it always. Most of the time he had no idea. It just worked for us. He did the same thing eventually. But now, as then, we do everything else together, a totally solid relationship. We are still far closer today than most vanilla couples.
Mrs Hotwife