Am I being paranoid or should I be upset about this?

You say his friend put him on the phone too her ( was this friend in your eye sight?) and then he ped the phone back or he asked too speak too some body that was there in the room with the girl in question?? there seems too be a miss communication i can tell that by you're story maybe you have got it wrong, don't take this the wrong way but i know from experience women tend too exaggerate the truth and over elaborate, maybe he is telling the truth and you need too except this because if you don't what is the point being together if you don't trust the guy.