without reading it in its entirety, I have to comment on the "FB" aspect that I read up to. The point at which things went awry was when you actually gave him permission to have one. First, I don't believe anyone should have a partner of any kind that uses them purely for sex anyway it's demeaning and it's using them. IF there is no emotional connection between people I think they need to stay out of the bedroom anyway but even with my own personal values aside... and if you think that's incorrect, the idea that someone can have a "FB" and actually keep it physical only is being naive. I'm sure it's possible and happens but I think it's very rare that no connection would be made unless he hired a prostitute, a different one each time. Fact is over time, repeatedly seeing the same person even just for sex is going to turn into something eventually. They've met on the most intimate of levels, and in my mind, it's inevitable, the longer that goes on the more inevitable it becomes that it will be more than that. I'm not shocked or going to judge him on this at all. Just human nature.

To say that it was infidelity at the poitn where there was more than just sex I think is inaccurate. It is infidelity just by having a mistress only it was condoned by you.