IMO, your check/call of the flop means you have a strong hand. Wouldn't he bet the turn if he continue bet a hand with an ace/six (unlikely 6) in it and then makes his straight? I mean, I'm not saying every time I'd bet the turn here with an A or 6, but most of the time I would. I'd bet hoping to get more money off you drawing to your boat/or to see if you might have made a straight as well.

Your blocking bet on the river looks pathetically weak compared to the pot. Awesomest wakes up and thinks he might be able to push you off your hand by raising huge. The action seems too strange; I'd look him up and expect my hand to hold up enough of the time for it to be profitable.

Curious - what was your line going to be with a blank turn?
And what do you do if he bets turn? Call/block bet river? If he raises your blocking bet with this action, do you fold then?