Flop top pair no kicker, standard fold?

[this guy]

Is this too weak tight, or a standard play? Villian seemed pretty loose but I didn't really have anything else on him. I'm not sure what to do in these situations, while I do have top pair the pot is small and MP2 is representing a decent hand.

Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is BB with 3[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls, <font color="#666666">3 folds</font>, SB completes, Hero checks.

Flop: (3 SB) 2[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP2 raises</font>, SB folds, Hero calls.

Turn: (3.50 BB) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP2 bets</font>, Hero folds? [img]/images/graemlins/confused.gif[/img]