He wouldn't have made any money on this hand if he'd have CR'ed the flop. I have found that if you play passively preflop, and then get active all of a sudden on the flop, its a dead giveaway on your hand. If he'd have been the raiser preflop, this would be a different story, he could have been more aggressive postflop, because of a lack of credibility.

I think Bob's line was fine, although since that turn card made a straight AND flush draw apparent, I would have pushed the turn. On the turn he is GUARANTEED to be ahead of any possible holdings Villain has, so its a win/win situation.

You should have pushed the turn here because you obviously saw the two draws out there, and were anticipating going all the way with this hand no matter what the river card was.