K5s, posting in the CO, flop decision

[Boolean]

First hand, no reads.

Party Poker 0.50/1 Hold'em (9 handed) converter

Preflop: Hero is CO with K[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img]. Hero posts a blind of $0.50.
UTG calls, <font color="#666666">2 folds</font>, MP2 calls, MP3 calls, Hero (poster) checks, Button calls, SB completes, BB checks.

Flop: (7 SB) T[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(7 players)</font>
SB checks, BB checks, <font color="#CC3333">UTG bets</font>, MP2 calls, MP3 calls, Hero folds.

I'm getting odds for a gutshot, if I didn't discount them because of the flush potential. I could also split the pot with another king as well. Good fold? I found that some of my weaknesses were calling on the flop without proper odds and without discounting appropriately, so I'm making a conscious effort to notice these plays and really think them through.