Here's my assessment:
Bella...geez! She's worried about her mom seeing her in a showmance. I wonder how her mom feels about her behavior towards Nicole? She goes beyond mean girl and borders on being a sociopath! She is a master at twisting other people's words. Nicole said, "Why can't we discuss this like educated adults?" Bella said, "So now you're calling me uneducated? Did everyone hear that? She called me uneducated!" Then she just walks away before Nicole can speak. Wow. If Nicole gets evicted, I hope she wins the chance to come back into the game and settle that score.
Ovi...bravo. He stood up for Nicole. That took guts and integrity. The game can be played without deeply personal attacks. He tried to remind the bullies of that fact. His parents should be proud.
Christina...what? Why the heck did she think she was going up? Nick was just being weird. I didn't hear him say anything about her being nominated (how does "brussel sprout" mean "Christina is going up?"). She completely freaked out. With 16 people in the house and only one winner, the odds are that she will be nominated more than once. If that's going to be her reaction each time, she shouldn't have signed up to play.
The Jacks...get them out! As soon as Camp Comeback is settled and evictees actually leave the house, those guys need to be taken out. They're too powerful (at least they think they are). I never understood why people don't go after the top-dogs (like Paul).