1. Jeff had a very low-key alliance with Jackie the whole time.
Jeff and Jackie realized that being the only two people who knew each other prior to entering the Big Brother house would put huge targets on their backs. So what did they do? They split up!
The former teammates acted like they had a falling out after The Amazing Race and weren't all that close—and everyone ate it up. Secretly, they were meeting late at night in the storage room to talk strategy. We saw evidence of their secret alliance during their emotional goodbye hug after Jeff had been voted out of the house.
Good acting, guys!