Get in the Word, read that Bible, pray and cut off any lines of communication- even if that means quitting your job!
The fact is, you will regret this. Most likely, it only seems exciting because TV, porn and our evil hearts have made us think it's going to be fulfilling, but really it will destroy you. And as you are destroyed your family will be the collateral damage of your sin and their suffering will be great.
Most of all, remember that God hates divorce and hates adultery.
"a man who commits adultery has no sense; whoever does so destroys himself. Blows and disgrace are his lot, and his shame will never be wiped away." - Proverbs 6:33
If that's the price you are willing to pay for a short, disappointing sexual affair, then that is your free will choice to make. But remember, God warned you through His word and when the suffering starts, remember that it was your own choice to spit in God's face and disregard His wise instructions on what choices to make.
I think you made a very wise choice by opening up about this here in a Christian environment... Good choice.. now make another one and sever contact with whoever you are tempted by.