weak fold?

[snapfc01]

seemed to me like he was sitting on the K and waiting to trap someone... so i laid it down. i've seen him check then raise on the turn with every big hand he's had so far... what do u think? fold or call then check/call the river?

PokerStars 1/2 Hold'em (10 handed) converter

Preflop: Hero is UTG+2 with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, Hero calls, MP1 calls, <font color="#666666">5 folds</font>, BB checks.

Flop: (3.50 SB) K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, MP1 checks.

Turn: (1.75 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP1 raises</font>, BB folds, Hero folds.

Final Pot: 4.75 BB