I used to despise Rachel in Flom3, but she is now impressing me with how she gets rid of all of the players. Morgan was all ego. She is now down to 3 men that would all choose her (even if it is because two have $1 checks and Mike couldn't live with himself otherwise). She must be very perceptive. And, on top of that, she has a romantic connection with each.
I think that Caleb is very into her, more than he wants to admit at the moment. Hard to tell from the editing, but he did smile when she appeared at the elimination ceremony.
I think Mike convinced himself early on that he was into her, and David is very sweet and likes her enough to give up $1. But, it will go down to Caleb and Mike.
Now, I am pretty sure that there will be a twist where the men get to put more money on the line. Mike thinks of himself as a person that would not choose money, but I sense that Caleb may pull ahead in the end.