I can't make a very educated decision since I've only read the first book (didn't like the second), but judging 由 the material within it, I'm Team Gale all the way. My friend says he turns out to be a real jerk though. xD;
truely I can't decide ither. Team Peeta because he is lieing to protect Katniss and he's taking the hits but Team Gale because Gale is there at her side helping her through things like in Mockingjay he was always at her side like when they were in district 8 visiting people in the hospital and the bombings happened.