BB vs. Button-- cry and call 3rd nut straight?

Full Tilt Poker
Pot Limit Holdem Ring game
Blinds: $0.05/$0.10
9 players
Converter

Stack sizes:
UTG: $6.05
UTG+1: $8.30
MP1: $0.70
MP2: $8.15
MP3: $1.10
CO: $4.75
Button: $6.30
SB: $2.70
Hero: $30.65

Pre-flop: (9 players) Hero is BB with 6 Q
6 folds, Button calls, SB folds, Hero checks.

Flop: 5 7 9 ($0.25, 2 players)
Hero checks, Button checks.

Turn: 8 ($0.25, 2 players)
Hero bets $0.25, Button raises to $1, Hero calls.

River: 5 ($2.25, 2 players)
Hero checks, Button bets $2.2, Hero calls.

3-bet turn. It puts your hand face-up, but he's a shorty and might get it AI with worse.