User blog comment:Eievie/Peeta vs. Gale vs. Other/@comment-3540464-20110809204511/@comment-97.94.104.235-20111030235442

I really think it has nothing to do with the fact that Prim was "his potential spouse's sister" as you put it. Prim was Gale's neighbor for their whole life, until Prim moved to Vic's Vil.