Why would a married man stop looking at his ex mistress at work after he got caught cheating but 3 mths later you catch him looking at you?

because he knew he made a bad decision and wants her back.

ANSWER:

Gosh just leave him alone, move on and have a life of your own. You already helped him destroyed his wife, I think that's enough for her to take, agreed? Stop dreaming that this not so good of a husband will have his way back to you. Move on and stop with this married men already...not an insult but reality love..