Aa

he most likely has but i dont fold on the river. I just get pissed he got there and on to the next hand.

Up to the River pretty Standard but you should not bet the River. Too likely that 8x Kx or 2pair got there and since nobody has shown to have anything it's likely they got you now by the River. Of course some worse hands might call but it's too likely to be behind though. So check the River and check/call as it happens very often that you intend playing bet/fold but finally you look at the pot and after the other 2 have folded their hand, you decide to call and given the odds i would have called. And if you check the River, you can wait for the action of the other opponents. If mp2 bets and BU raises, you can fold and if Mp2 bets and bu calls and UTG+1 calls as well, you can fold as well since at least one of'em got 2pair+. Certainly you were behind on the River but i'd consider calling due to the pot odds.

Hmm okay.
So basically I should realize that I might be beat and check from that board.