Heads Up - What's My Turn/River Line Here?

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I think I'm behind because my (very weak) stats indicates he's passive.


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In my experience, passives love to bet into you with a hand they perceive as "strong", like top pair on this board. he could have trips, but there are a lot of other hands you're way ahead of.
if he 3bets, that's another story: that's pretty unusual behavior, and i'd probably fold.