I dont usually bluff in 3bet pots but this time felt right. Thoughts?

Hes 25/21 and thought for a long time before calling the turn bet.

Party Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
5 players
Converter

Stack sizes:
UTG: $65.04
CO: $66.68
Hero: $62.56
SB: $59.24
BB: $47.25

Pre-flop: (5 players) Hero is Button with A K
2 folds, Hero raises to $2, SB folds, BB raises to $7.5, Hero calls.

Flop: 3 Q Q ($15.25, 2 players)
BB checks, Hero checks.

Turn: T ($15.25, 2 players)
BB checks, Hero bets $7, BB calls.

River: 7 ($29.25, 2 players)
BB checks, Hero bets $20

Results:
Final pot: $69.25