The baker

http://www.thesun.co.uk/sol/homepage/deidre/4358682/Deidre-Daily-Drama-Married-boss-turned-up-heat-with-bakers-love-in.html

Talk to her about what happened and tell him to try talking with your husband or leave the job that is in love with her.
Tell your girlfriend what happened but do not let it because it is the woman in your life and this was just a slip.