Honestly.. I flirt... that seems odd, but really, if it's too early for me to believe them I don't want to dishearten them by changing the subject or freak out. I definitely don't want to say it back either - if the feelings aren't there. It leads to expectations afterwards and I tend to stay well away from unwanted expectations as all that becomes messy. So, I flirt. So that they see something encouraging, with out me submitting to the words in any way. They may take it as me "feeling the same way," but since it's not said - and really so far I've been lucky and not met a guy to actually force the subject it out of me with countless discussions or questions - then the guy cannot hold the words against himself or me. Anyway, It's easier for me to be flirtatious.
It is leading them on, but saying I love you just for the hell of it is a lot more damaging compared to me turning the attention away from the word and returning to a light moment. I guess it's a perk that women have... and I don't recommend it for most people.. lol.. it's just something that I do.
We've been desensitized to the word.