It didn't seem right to Peeta either but he didn't know Gale as well as Katniss did. From what he understood of him, Gale was stubborn but faithful to those he cared about, while not being the most open of people. He could understand why.

When he caught her looking at his hands he reached out to hold one of hers again, lacing their fingers together. "I'm sorry, Katniss."