I personally think these are obvious ones (I could be putting my foot in my mouth, though...).
I think Kelly and Jon will contemplate ending their relationship. Especially considering that Millie and Chuck and Reichen and Chip are the only other couples, and they have the least fighting between them of any of the teams.
And it would make sense to me that Tian accuses Jaree of sabotaging them, because that's how it looks to the viewing audience on pretty much every episode...
But looking at the comments, I am confused in hearing that Jaree tells Tian that she is trying to sabotage them!?!?!? Isn't it the other way around...?