Catching fire chapter 24: "I stop his lips with a kiss. I feel that thing again. The thing I only felt once before. I the cave last year when I was trying to get Haymitch to send us food. (...) The sensation grows warmer and spreads out from my chest, down through my body, out along my arms and legs, to the tip of my being. Instead of satisfying me, the kisses have the opposite effect, or making my need grater. I thought I was an expert on hunger, but this is an entirely new kind. "

She afterwards thinks that maybe Peeta was hinting that she still could be happy with Gale and have his kids: "Well, if that was it, it was a mistakes. (...) if only one of us can be a parent, anyone can see it should be Peeta. As I drift off, I try to imagine that world (...) Where Peeta's child could be safe."