Question about faithful " boundaries" in a relationship; what do you guys think. as an opinion?

Hi, I was just wondering what are your opinions about this. It sounds silly, but it is on my mind. Just read please, lol. It might be a lot

Anyways, I am a really faithful guy; usually when women approach me, lets say at school, or out in the mall, or perhaps a get together form my friends and there some woman around, when they start the conversation going, the common stuff to "get to know someone" or "hitting on someone" is common questions like where are you from, how old are you, your plans for the future, ect.

Now, what are your opinions about your boyfriend, fiancee, girlfriend, whatever it is, to "lead on" flirty questions from a stranger who is trying to get to know him/her? For instance, they keep the conversation going and continue asking the same question back.

example i go to a party and a women approaches me asking me questions "to get to know me" and I ask the same flirty questions back to get to know her.

That would be a bit nerve wrecking for a moment huh? Opinions