Had the exact same question on that place - sensed it was about to go into another downward vicious sprial, and made a comment to try and prevent it, but didn't work. Also put the the rules around appreciation, when questioned by a certain poster, but that didn't seem to work either
Surely it was a positive episode for Rebecca, in confirming her interest in Ross and therefore trying to move on from Robert (we hope)...
Aaron really is trying to keep Robecca apart - said he was tired (could also have been for other reasons;) as soon as he heard Rebecca and then gave her a weird look.
I'm quite looking forward to a Robron bust-up next week - like the angst!