Diplomacy is bugged

[Eques]

I dont know if you guys play dumb. I will try do explain it in simple words. You guys know what reputation is? I bet you do. So i got an ecxelent reputation in the game but the AI keep backstabing me. Does reputation works? No.
Like i told, i had a marriage alliance with the french. My army was the strongest army in the face of the earth. Next turn after the aliance the french atack with a ridiculous army. Is there any reason in this behavior? NO, its ridiculous.
I am crushing the french now, I offered all their citys back and a lot of money. The french sayd no as that ridiculous deameor stuff was allways down and down (i say: its mderator edit broken). Now the french died . The deamenor is working? NO.
Now you tell me diplomacy is perfect. Now you tell me everything is allright. Now i tell you you are just blody fanboys and you will destroy this game!
I wont say nothing about this mater anymore.