Comment by bramcohen

In regards to the question of 'Is it legal to fire this person for this?' at least in California it's a slam dunk - the answer is yes. One of the questions on the harassment training I had to take was for a related scenario, where a boss cut off an affair with an employee and later on fired her because his wife found out and wanted him to, and the whole point of the question was that the firing was legal. If it's legal to fire under that circumstance, it's definitely legal to fire under this one.