Answer: Katniss liked both boys but with Peeta, she truly loved him while with gale she mistook the respect and sibling love she felt for him as romantic and also was sort of just using him to keep her mind off Peeta so she would find difficulty thinking of both of them at the same time because she feels genuinely bad for what she did to gale and she also can't think of Peeta at the same time as gale without having conflicting thought of who she truly loves