These two deserve each other.
For the past hour, they've been acting like pre-teens - pretending the other doesn't exist, making noise to annoy the other, lots of passive-aggressive silliness. At one point, they even argued as to who had the right to the room because Lydia stepped out for a few seconds.
Right now, Lydia is complaining about being used by Jessie, and that he tried to break up her and her best friend. Jessie is claiming that he's not trying to vote her out, and that he will do whatever Russell tells him to do.
Funny thing is Natalie is standing outside listening to the entire conversation.