roboringo is a loose aggressive player

Seat 3: vinnie_wick ($17.55 in chips)
Seat 5: Joh85 ($59.20 in chips)
Seat 6: Hero [7C,8C] ($49.50 in chips)
Seat 9: roboringo ($44.65 in chips)



ANTES/BLINDS
Joh85 posts blind ($0.15), Hero posts blind ($0.25).

PRE-FLOP
roboringo calls $0.25, vinnie_wick folds, Joh85 folds, Hero checks.

FLOP [board cards 8S,3H,6S ]
Hero bets $0.40, roboringo bets $0.80, Hero calls $0.40.

TURN [board cards 8S,3H,6S,7S ]
Hero bets $1, roboringo bets $4, Hero calls $3.

RIVER [board cards 8S,3H,6S,7S,QS ]
Hero checks, roboringo bets $5, Hero folds.

SHOWDOWN
roboringo wins $15.



SUMMARY
Dealer: vinnie_wick
Pot: $15.25, (including rake: $0.25)
vinnie_wick, loses $0
Joh85, loses $0.15
Hero, loses $5.05
roboringo, bets $10.05, collects $15, net $4.95
What do you think about the hand? I call the reraise on the flop because he made that same reraise against me a few hands earlier and I know he's LAGG.
I don't really know what do here. Also, what if the river isn't another spade and he makes a bet?
On the turn I'm scared of a flush and there's a small chance he has a straight.
roboringo could have limped prelfop with basically any 2 cards btw.