That too. I know mine did.
I hope LW3 is still around because I created this account just to give her the advice that I sorely wish someone had given me 3 months ago when I was in a very similar situation. Cut him off. Completely. Delete him form you phone, facebook, contacts, everything. If you're forced to work with him, be polite, but distant. He'll get the message, and he will know why. It will be hard at first, and it will feel unnatural, and you will miss him but do it anyway. The good part is that it will feel almost as deliciously dramatic as kissing him would. Don't have a teary conversation about it, or send a long letter about your feelings to explain yourself, just do it right now. Because once you cross that line, it is so damn easy to cross all the lines. Which hurts terribly. At best, crossing that line will hurt you both terribly, at worst, you will lose friends, you will lose him, you will lose your self respect, and he could lose his wife. In a month or so though, it won't be hard anymore.