100nl passive line with KK

[loft123]

SB in the hand is 48/3/0.4 no other reads on him.
I'm playing somewhat aggressive opening a lot and he usually folds to my continuation bets.



Poker Room skin
No Limit Holdem Ring game
Blinds: $0.50/$1
4 players
Converter

Pre-flop: (4 players) hero is UTG with K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#cc0000">hero raises to $3.5</font>, Button folds, SB calls $3 <font color="aaaaaa">(pot was $5)</font>, BB folds.

Flop: 9[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/spade.gif[/img] ($8, 2 players)
SB checks, <font color="#cc0000">hero bets $5</font>, <font color="#cc0000">SB raises to $10</font>, hero calls $5 <font color="aaaaaa">(pot was $23)</font>.

Turn: 7[img]/images/graemlins/heart.gif[/img] ($28, 2 players)
<font color="#cc0000">SB bets $15</font>, hero calls $15 <font color="aaaaaa">(pot was $43)</font>.

River: 9[img]/images/graemlins/diamond.gif[/img] ($58, 2 players)
<font color="#cc0000">SB bets $20</font>, hero calls $20 <font color="aaaaaa">(pot was $78)</font>.

Results:
Final pot: $98

What's your line for a stituation like this?