How to handle a coworker after we hooked up

A co-worker and I had an brief affair. We both knew it was wrong but there was so much sexual tension between us that we tried hooking up. We have hooked but never got to the point of having sex but was close to it. Since our last encounter he seems to be avoiding me. We were good friends before this started and now it seems he is giving me the cold shoulder. I really don't know what to do. I don't want to lose him as a friend and would rather keep our friendship and put the past in the past. I am not sure what to do. Please help.
How to handle a coworker after we hooked up
Post Opinion