Sexuality is never only physical, and its implications are emotional, at thought levels, and on ones life as well. So merely being physical cannot be the end to any situation, as one would not know the repercussions on the relationship and otherwise. Moreover I would like to keep the marital relations issue separate from your work place issue, and each needs to be handled exclusive of the other, and one need not mix the two. You need to focus and improve the marital relationship by communication of your feelings and consider counseling. As for the work place issue, evaluate the long term implications on your life before moving further.