Who was she "hoeing" with? Wasn't it you, ama someone else? How would you feel if the tables were turned, and she exposed you to a girl that you were interested in? And then you want to turn around and act like you're a martyr because you're apparently "saving" other men from pursuing this woman?
Oh, and I would urge you to revisit the definition of what an f-boy is.
As much as I despise the acts of the OP, this is one of those unfortunate cases were 90% of the women don't care if she was the one that was ratting him out to a potential he was about to marry, in many cases this works in his favour.
Provided of course all this took place prior to him getting to know her (not cheating), the outwardly religious looking women and the straight up liberal both don't care about these things, the way every male does (saaqid, religious, secular etc)
I met plenty of outwardly religious looking women who told me point blank anywhere from 3-7 is the max amount of women she would accept (women the man screwed of course)
This goes to show that it isn't really the shameless act of zinna itself that is the issue but the fear that the more women you had it with, the more the likelihood you will at some point grow tired of her and walk away, that's the motives for these numbers.
The more secure the women is, the higher number she is willing to accept and vice versa, I had this conversation with probably over a 100 women casually in a decade and more, the scariest thing is that those women who I knew were 99% chaste were no different, in fact they despised virgin male's more then the experienced ones who found them cute.
Such is the despicable shameless times that we live in today.