[LittleFarmer]

Would be nice to know how loose of a caller he is postflop. Personally I would throw in a raise somewhere if I hit the flop. He only shows aggression as soon as the A of spades hits, so an Ace, flush or straight isn't scary to him. Looks like a "No free river because I hit my flush" bet. I think because you have an ace as wel, the chance of another ace is low enough to call here in stead of raise.