Robin: Kevin, I love you, but please don't just be the nice guy who says the right thing.
Kevin: Robin, I want to marry you no matter what. Assuming you don't turn into a big fat fattie. See? Right there. Don't always say the right thing.
Robin: Look, you just got a truckload of new information dumped on you.
Kevin: Will you marry me?
Robin: My feelings on kids aren't gonna change.
Kevin: Will you marry me?
Robin: Haven't you always wanted kids?
Kevin: That was before I fell in love with you.
Robin: Well, that's the thing. Your future always had kids in it. That is something huge you would be giving up for me. I just don't think I could ever owe someone that much. I'm scared that you'll... wake up in-in a year or ten or 50, full of regret. So... I need you to be sure, okay? If we get married, you will never have children. Are you really okay with that?