.50/1 AK unimproved in position against TAG, turn and river play

[Douglas Leslie]

I bet the turn here. What do you think villain has here? He didn't cap pre-flop, so AA-JJ are unlikely. He is either ahead of you with something like 77-99, maybe two high cards including a 10, or he is drawing to a flush. If the latter, I don't like giving him a free card. If the former, you can plan on checking behind on the river if your hand doesn't improve. If you get check raised on the turn, you can be pretty sure that you are behind against this guy and fold since you are getting only seven to one with at most six outs and probably less.
As for not wanting to "lose" villain, I would tend to be happy if I win the hand with A high rather than give a free draw to him.