PokerRoom No-Limit Hold'em, $0.10 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($9.90)
MP2 ($5.00)
CO ($4.90)
Button ($10.70)
SB ($8.10)
Hero ($18.05)
UTG ($12.75)
UTG+1 ($4.35)

Preflop: Hero is BB with A, Q.
3 folds, MP2 calls $0.10, 1 fold, Button calls $0.10, SB completes, Hero raises to $0.55, MP2 folds, Button calls $0.45, SB folds.

Flop: ($1.30) 4, 4, T (2 players)
Hero bets $1, Button calls $1.

Turn: ($3.30) 2 (2 players)
Hero bets $1.5, Button calls $1.50.

River: ($6.30) T (2 players)
Hero bets $2, Button raises to $5, Hero????????

I know river lead was weak and probably led to his raise. Doubt it was a bluff on a $10 table though.....