lol yeah. Maybe Peter didn't trust Sirius to not go "Ha you evil Death Eaters, I will never tell you that James and Lily are hiding in Godric's Hallow... CR*P".
"Sirius, I really don't think you should be the secret keeper for Lily and James,"
"They would go after you first. You and him are best friends. You need to find someone that they would never think of,"
"What? Me? No.. not me.." -blinkblink-
"Yeah you. They'd never think it was you," -goes off to plan this with Peter cursing behind him.
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