Slow playing first hand, when raised from sb?

[Wynton]

Normally, I would have raised at some point in this hand, but because I had just sat down, had no reads on the sb and thought he might have been testing me, I played it passively. Was this real bad?

PokerStars 3/6 Hold'em (6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with K/images/graemlins/heart.gif, 9/images/graemlins/heart.gif.
<font color="#666666">4 folds</font>, <font color="#CC3333">SB raises</font>, Hero calls.

Flop: (4 SB) 8/images/graemlins/club.gif, Q/images/graemlins/spade.gif, K/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

Turn: (3 BB) 2/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

River: (5 BB) T/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

Final Pot: 7 BB

[kiddo]

No, its ok. When 3rd flushcard hit turn I would raise, making him fold a low clubcard. But if not 3rd flush I like this line. Only 1 overcard to your pair so let him bet his lower hand. I do this often against aggressive guys.

Raise river, good chance he is betting Q or 8.