Some from a site:
Where have you been all my life?
Response: Hiding from you....how the hell did you find me?
I would die for you...
Response: Prove it!
Haven't I seen you someplace before?
Response: Yeah, that's why I don't go there anymore.
Is this seat empty?
Response: Yes, and this one will be too if you sit down.
So, wanna go back to my place?
Response: Well, I don't know. Will two people fit under a rock?
I want to give myself to you.
Response: Sorry, I don't accept cheap gifts
Want to spend the night with me?
Response: Sorry, I gave up babysitting years ago.
I'd go through anything for you.
Response: Good! Let's start with your bank account.
I would go to the end of the world for you
Yes, but would you stay there?