I had that exact same thing happen but it was with 9's. I had a Pair 9's Flop came 9 9 7 I checked it all the way to the river thinking I could catch someone on something.. Then the turn and river comes AA The guy goes all in I call him and he's got pocket aces.
Shouldn't have slow played it but he probably would have called me all the way with his aces.
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