Yes, i notice it was a bluff now. The same thing happened with the Britons. I was negotiating for a surrender (senate's orders) and they asked for 2 territories and about 5000 denrii. I managed to get them down to 4000 and map info (but they broke the allience next turn, not that i cared, i was just doing it for the senate popularity, and besides, it gave me an excuse to attack them!).