Heads Up NLH hand

OK, I am not sure the play I made can be justified, here is the hand.

Situation My friend and I decided to play a best of 10 series of Heads Up Matches. Game 4, I lead 2-1. Live Game. Heads up. Hero has about 240 BBs, Villain has about 220 BBs

Preflop HERO dealt 6[img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/diamond.gif[/img] on the button.

Hero calls BB and BB checks

Flop 6[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/spade.gif[/img]

Villain checks, HERO bets 2 BBs (the pot). Villain calls.

Turn 10[img]/images/graemlins/club.gif[/img]

Villain moves as if to check, but then instead tosses in 3 BBs. Hero raises to 15 BBs (raising the pot), the Villain just calls.

River 6[img]/images/graemlins/club.gif[/img]

Villain checks, Hero Bets 1.5X the pot, Villain moves all in, Hero calls.

Is there anything out of line about my play, something you would have done differently?