Cheater :(

While on a recent business trip, I had too much to drink at the opening night of a conference (free, open bar). Afterwards, some folk wanted to go out drinking and I figured why not, being social before a conference is good, right? I stayed for awhile, and after a bit me and one of the women were the only ones left. We drank some more, started getting cuddly and before I knew it we were back in my hotel room all hot and heavy. We managed to stop before going ALL the way (we were naked, and very nearly there)... But I know I've cheated on my wife, and can't find any way to tell her. I will, I know, because I love her too much not to, but I can't believe I did this and can't stop thinking about it :(