Villain is an aggressive reg. On the river he can be bluffing, but don't like to call for > 1/2 stack with middle (and ofc I don't like the 3 clubs).
You should raise larger on the flop, something like 750. As played, fold to the river cbet.
Fold. Villain has a K or a flush imao.
I called and lost vs KJo. You were right :(