5/10 Turn the nuts, river gets dicey

[cheet]

YouBetterPray is a new player, first time I've played with him and i have him at 14.44/10.11/1.83 over 200 hands. Only history so far is him 3-betting more a little more than normal preflop but I haven't looked him up yet. HBCarter is some random 57/42/2 donk.

Full Tilt Poker - No Limit Hold'em Cash Game - $5/$10 Blinds - 5 Players - (LegoPoker Hand History Converter)

YouBetterPray: $1,266.75
HBCARTER: $732.65
Hero: $1,945.25
risky11: $710.00
holdem_heels: $596.40

Preflop: Hero is dealt K[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img] (5 Players)
<font color="red">Hero raises to $35.00</font>, 2 folds, YouBetterPray calls $30.00, HBCARTER calls $25.00

Flop: ($105) 3[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/diamond.gif[/img] (3 Players)
YouBetterPray checks, HBCARTER checks, <font color="red">Hero bets $80.00</font>, YouBetterPray calls $80.00, HBCARTER calls $80.00

Turn: ($345) Q[img]/images/graemlins/club.gif[/img] (3 Players)
YouBetterPray checks, <font color="red">HBCARTER bets $345.00</font>, Hero calls $345.00, YouBetterPray calls $345.00

River: ($1380) 3[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">YouBetterPray bets all-in for $806.75</font>, HBCARTER calls all-in for $272.65, Hero ???

Do I have to call in this spot?