It seems like you were rather passive aggressive about this. When he asked which bed you wanted, you didn't answer, and now you are complaining about it.

I think he acted very appropriately. He asked your preference, as he should have. You didn't have one. When neither of you expressed an opinion, he came up with a quick way of breaking the stalemate.

If you wanted the big bed, you should have said so. People aren't mind readers.