10NL: medium flush on river facing reraise

[dn77]

Hi. New to the board. Very little experience with villain, but he is running 37/13/.7 in the 40 or so hands I have. I recognize preflop is terrible, but there has been a lot of limping/calling down with nothing, so I want to see a flop (shame on me). I'm 28/13/1.2 but playing especially passively/terribly tonight for whatever reason. Too tired I guess...

PokerStars No-Limit Hold'em, $0.10 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">Hero ($9.20)</font>
SB ($9.90)
BB ($8.95)
UTG ($11.60)
<font color="#C00000">MP ($10)</font>

Preflop: Hero is Button with J[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, MP calls $0.10, Hero calls $0.10, SB completes, BB checks.

Flop: ($0.40) 3[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP checks, <font color="#CC3333">Hero bets $0.3</font>, SB folds, BB folds, MP calls $0.30.

Turn: ($1) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
MP checks, Hero checks.

River: ($1) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
MP checks, <font color="#CC3333">Hero bets $0.6</font>, <font color="#CC3333">MP raises to $2.1</font>, Hero calls $1.50.

Final Pot: $5.20

He played the hand like a typical 10NL flush draw up until the river, but the check-raise threw me off. With my checking on the turn, I feel like he would want to be sure a bet got in there on the river if he made a flush. And I'm clearly beating a ton of hands here.

So call/shove/fold river after check-raise? Anything else to do differently? Or am I being too results-oriented here (you can probably guess what he has)?