Description of bluff: http://www.d20pfsrd.com/skills/bluff
Situation: I attempted to convince a fellow party member that another PC was actually an impostor. (It was a unique situation where my alignment was briefly turned CE. We recently had a couple of party deaths coincide with assassin attacks and a new PC entering our party claiming to be a follower of Desna, which was true, but some of the party members already had doubts - all role-play stuff)
I successfully bluff the party member convincing them that this new party member is actually an impostor and could be working for the assassins.
A second party member made his sense motive and was not convinced.
The second party member who was not convinced offered to the convinced party member that he did not believe me. The convinced party member than decided to believe the non-convinced party member rather than accept what I was saying was true under the Bluff description. This was within 1 round and no roll was made to 're-convince' the convinced party member that I was lying.
How would you suggest handling this situation? There is not an actual duration on how long you would believe nor does it say anything about how to end the bluff and determine truth.
Any thoughts would be great!