Obviously. Alonso hasn't exactly given Vettel any reason to like him has he? In fact, he has gone out of his way to make sure he gives no credit or respect to Vettel.
Exactly and I think Vettel is starting to get tired of hearing Alonso constantly downplaying his achievements.
I doubt Red Bull would even think about pairing two top-drivers that don't get along, if people were already doubting the Vettel-Raikkonen pairing because two nº1 drivers in one team wouldn't work and they are friends, then this is would be insane.