Getting extremely close advice needed (33y pretty hotwife in the making)

We started when having sex talking about our fantasies. Me calling him a different name and how he is fucking my husbands pussy and hubby telling me the same. Cheating made up stories. A different name and how much better she is than I am etc. then his buddy stayed over and I secretly watched him jerk off. Told hubby about it. Then we started looking for couples online. Went to fantasy fest and I jerked off a few stranger cocks on my boobs and it went from there
 
Update:

Things are moving very fast atm. I just intercepted text messages between my gf and a friend of her.

So basically we gave each other a free card for ONE TIME only and we discussed that being open and honest is key to make this work, but I just found out she is going to brake that rule. She said to her friend that this guy who is texting with is coming to town and she wants to fuck other dudes for years so she can’t hold it anymore. She wants to meet with him. That is litteraly what she said. But the most shocking part is that she said she is not going to tell me. So if that happens she is breaking our rules and I don’t think this will stay with one time only from her side.

I have very mixed emotions at the moment, because I don’t like the feeling of betrayal and I want to trust her. I also don’t understand why she doesn’t want to share with me, because she can literally discuss anything with me. Part of me wants to confront her, but that will mean I will ruin this whole process. And I also feel lots of excitement and also feel humiliated and that I can’t control it anymore, which is turning me on very much.

Not sure what to do, but will keep you in the loop. I am open to advice.
Hoi uvasacq, hoe staat de zaak er voor? Ze wil het waarschijnlijk gewoon zelf ondervinden en dan zal ze je wel op de hoogte brengen (denk ik). Gaat ze er voor ben je vanaf dat punt haar cuck en beta male geworden. Hoor ik nog van je? Groetjes, Bull Wil - Zuid-Holland.