Someone I just met related this story to me.

I have been seeing a guy for a while, its going
quite well, he's nice and all.
Recently a guy started working with me who's in my opinion HOT,
Even though I love my man, the last few months I've been
day-dreaming about the guy I work with; having real, very vivid
sexual dreams about him. I feel guilty because he is married
and has children, I have not said anything to him and he has
not either however I feel he knows and might be feeling
something too and flirting a little, I don't quite return the
flirtation I keep everything proffessional and have a strict
rule of NEVER ever sleeping with or having an affair with a
married man so this infatuation will never lead into anything.
The problem I have is how strong these feelings are that
have led to a momentary thought that I could leave my man for
the guy I work with.
I am full of guilt for dreaming about this married guy,
is this day-dreaming cheating?

Discuss: is daydreaming about a married man
bad if it will never turn to anything? And is it cheating?