80-160 river decision

[Dave Mac]

4 handed ub 80-160,
i have AJs UTG, and raise it up, folded to the BB who calls, a 2p2er but one who has seemed a bit loose and over aggro to me, i have also played with him, in this game, about 6 times this month.

flop is A82r
check, bet, raise, i 3 bet, he calls.

turn offsuit 8
check, bet, call.

river K
check, I????
dave