Do girls have "seconds thoughts" if...?

I personally might take more notice in that and ponder the possibility of "hmm what would it be like to date him" if he was serious and ment what he said. If I'm not physically attracted to him right away it wouldn't just happen just because he's being flirty now.

Would I have a different impression if a guy showed interest in me? Sure. Like, if we were just friends or aquaintances even, and he started indicating his interest in me. I would be flattered if he was commmenting me a lot and showing interest. If the chemistry was there, I'd take it to the next step.

Yea that's a red flag to a girl that the guy likes you : ] and I know I would look at the guy diffrently and start thinking hmmmm does he like me do I like him? a lot goes through our minds when you give us compliments when you usally don't.

If you want to ask me anyhitng you can id love to help :D

yes. usually, whenever a guy shows interest in me, however subtle, I take notice of him more and may even become more attracted to him