you said you played tons of hands together yet you didn't give any hands in the notes?
what are villain tendencies?
does villain c/c draws?
does villain c/c flop + turn bets with value hands then all of sudden turn his value hand into a bluff???
anyway we only know villain is looser than hero and competent
which opens up alot of different kinds of interpretation
i believe his most likely range is k
j
/10
j
competent villain shouldn't bluff this river card when you pot commit yourself on the turn
seems like a fold
in order for a competent villain to bluff this river, he has to put you on marginal hands for barreling turn
or unless you often fold to pressure/scare cards
otherwise this is standard fold