[Llama88]

i think he is calling the flop on 55/33 anyway because you bet so small, which he most liekly reads as a weak cbet where he is a head, i doubt he shoves an ace here and A5 A3 play this the same. Other aces other than AK/AJ probably flat call the river. Only way calling is +ev is if he puts you on a bluff and would shove Ax.