i think it's a harmless crush as long as you don't cross the line and do anything you know isn't okay. it's easy to have a crush on a stranger or even an acquaintance because you don't know them or don't know them that well and you can imagine them to be just what you want them to be. so basically they are perfect in your mind. don't worry about it so much. sounds like you are still in love with your husband so as long as you never cross the line......
heres your choice:
1) Stay with your family you have now and with your husband whom you are in love with. Avoid this man or else it will get even stronger in your mind. This is a crush and these emotions are temporary. Dont screw up your life mate, trust me.
2) Pursue after this man, and cheat on your husband. Which I wouldnt reccomend, imagine if he had these same feelings for a girl? What would you feel? What would you say?
for the love of god, stay away form the man, these are just temporary feelings that die out
Flirt back, maybe you get into his pants.
I don't see anything wrong with a little fantasy life outside of a strong marriage. Everyone thinks about "what ifs" once in a while. This other guy is probably a handsome specimen and pleasant to look at, right? As long as you don't do anything stupid, like forget you're married, I don't see any reason why you can't sneak a peek whenever you can. I'm a happily married man myself, with a wonderful husband I would never cheat on, but I'm not going to turn away just because another hot guy walks past me. As my first husband once said to me: "I don't care where you get your appetite, just as long as you eat at home."
Probably because it's normal to be attracted to more than one person in a lifetime, you can either act on it or just fantasize, I say just fantasize.
Well, you're married. You aren't dead...lol
Seriously, this happens every so often. But like you said. It is "lust." It will pass. I sure hope you don't do anything about it. That is the key. It will pass.