Peeta says this about Katniss to win over the crowd. Doing this they can get more sponsors which is really good.I think that Peeta is telling the truth about loving Katniss.
2.What is Peeta's main concern during the Hunger Games?
Peeta's main concern about the Hunger Games is that the games are going to change him. He doesn't want them to change him into a monster that he's not. He wants to die as himself. He wants to show the capitol that he's just not a part of his game.