If I made set on the flop they only way I would play it is Bet, Bet and Bet again, it only comes to a real decision if at some point, and I am raised or shoved all-in on, at some point along the way, then I would have to consider whether I am being bluffed, or he actually has me beat?
On-line there is no way to know, because you have been taking the initiative and betting all the way, In a Live game however I would study my opponent hard, to see if I am reading his body language correctly.
I have had to let set's go in some situations, I have even folded better hand's like Straight's and flushes, on the River knowing I was beat, other time's I have called, Win or Lose, it really does not matter that much, it only matter's that you are still in the race, and have a chance of winning the game.
That is why Poker is so much fun.
When the fun Stops, STOP!