Peeta, all the way! It would be too long to explain, but as Katniss says, she needs Peeta. He reminds her that there is still good in the world, even after all the deaths and destruction that occurs. After all, Katniss desides to have two children with him, so that obviously says something. Katniss always cared about Peeta because she loves him, and would die for him, as he would for her. I like to think that is the most powerful kind of love.