I know something there didn't seem right to me.... He did say to Kate and Sayid that he had never seen them before but he had seen John Locke but the John Locke that he saw/knew (???) was p...... This is where Danielle intrupeted him..

Where would he have known him from?

__________________
Please don't give up, Des. Because all we really need to survive is one person who truly loves us. And you have her. I will wait for
you. Always. I love you, Pen

DESMOND: I love you, Penny. I've always loved you. I'm so sorry. I love you!
PENNY: I love you too.
DESMOND: I don't know where I am, but--
PENNY: I'll find you, Des--
DESMOND: --I promise--
PENNY: --no matter what--
DESMOND: --I'll come back to you--
PENNY: --I won't give up--
BOTH: I promise. I love you.