A Terrible Lay Down?

[TMac]

This is my first hand post. I've been lurking for a few months and have found several leaks in my game as a result of this forum. One of which is not getting enough value on my good hands. Another was playing too loose pre-flop. I thought I was playing fairly tight with my VP$IP of 25%. I have since gotten it down below 20% thanks to all the advice I have read here.

I have increased my aggression big time, but at times still fight the weak-tight desease. Is this a terrible lay down against a semi-loose and passive villian?

Paradise Poker 1/2 Hold'em (9 handed) converter

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img].
UTG folds, UTG+1 folds, MP1 folds, MP2 folds, MP3 <font color="#A500AF">(villian)</font> calls, CO folds, Button calls, <font color="#CC3333">Hero raises</font>, BB folds, MP3 <font color="#A500AF">(villian)</font> calls, Button calls.

Flop: (7 SB) 4[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, villian calls, Button calls.

Turn: (5 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">villian raises</font>, Button folds, Hero folds.

Final Pot: 8 BB

[27offsooot]

call down, u'll see a worse K here often enough, unless he is ultra-passive post-flop (reads?). If he is over aggressive, it could be a semi-bluff or complete bluff.

[Yads]

Yes. Also 1/2 goes in the micro-limits forum.