Evans and Oakley were so enamored with each other, they wanted to be alone with each other so Oakley could confess her true feelings. Russel could see there was something up with Oakley and Evans. He's good at taking a good opportunity to run! But now Evans and Oakley are gonna chase after him, not for the bounty, but to know whether or not he could sense their feelings.
Poor Sandra though, she never asked for this. She just wanted to hang with Evans, and then her brother again! She's caught up in a situation that could put her in so much trouble! I hope she doesn't end up in an even worse situation!