NL100 - Turn a flush, River Pairs Board, Villian leads out

[TwentyInch]

Villian is 40/10/1.5, he´s bad i guess.

No Limit Holdem Ring game
Blinds: $0.50/$1
6 players
Converter

Stack sizes:
UTG: $20.39
Hero: $148.74
CO: $33.63
Button: $121.45
SB: $104.80
BB: $124.04

Pre-flop: (6 players) Hero is UTG+1 with A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $4</font>, 2 folds, SB calls, BB calls.

Flop: T[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img] ($12, 3 players)
SB checks, BB checks, <font color="#cc0000">Hero bets $7.5</font>, SB folds, BB calls.

Turn: 8[img]/images/graemlins/club.gif[/img] ($27, 2 players)
BB checks, <font color="#cc0000">Hero bets $16.5</font>, BB calls.

River: 8[img]/images/graemlins/heart.gif[/img] ($60, 2 players)
<font color="#cc0000">BB bets $19</font>, Hero calls.

Results:
Final pot: $98

I thought pushing makes no sense, since he would only call with a boat, right?