I think Brian regretted it afterwards, when the grup allowed themselves to discuss nominations and Brian found out Helen didnt actually nominate him that week.
I think he was trying to do the fair thing because she was always cooking and never getting nominated and he didnt want to be different and get her nominated. I also think Dean had quite big influence on him.
Poor Brian though - it mist have been hard because everyone in the house knew that his final say would put either Helen or Liz up for eviction.
