100NL, flopped a Set on a ugly board

[InstaCall]

Villian is pretty TAG pf postflop somwhat aggro. Jus won a big pot so assume hes pretty steamy..

I have about 122, villian is around 90ish..
Hero has 33 pots it to 3, he re-raises to 9, i just called.
Flop comes A [img]/images/graemlins/spade.gif[/img] 4 [img]/images/graemlins/spade.gif[/img] 3 [img]/images/graemlins/diamond.gif[/img]
I checked, he pots to 17, I c/r to 44, he calls.
Turn 2 [img]/images/graemlins/club.gif[/img] He checks, I insta checked, hoping to get filled here.
River K, he goes all-in.. Hero..?