Before I tell you a hand i've got to tell you of an earlier hand which gave me a read on the Villian ( EP limper ) in the hand i'm about to show:

It's raised to $1 preflop and there are 4 callers along with the Villian. The flop comes . Checked to the preflop raiser who makes it $6. The Villian goes all in for $34 total and the pre flop raiser folds along with everyone else. The villian shows . Okay now onto the hand..

6-max NL50 table at Party. I pick up KTs in the CO and after an EP limper, I limp (i'd raise here 4/5 times but i like to mix up my play, the table is pretty observant and there are a couple of good players here), the button and bb call/check. I didn't have much of a read on the button other than he wasn't a maniac or LAG, hadn't seen him show down a hand and he had a full stack.

4 to the flop, the pot is $2. The flop comes . The EP limper and BB check to me, I bet $2 and the button and EP limper call. The turn brings a and the EP limper checks again. I bet $6 now (pot is ~$7), the button and the EP limper call again. The river is a and the EP limper pushes all-in for another $21.87. I called after a couple of seconds.

What do you think the EP limper had?
What do you think the button had and what his action was aftter me?
Who won the hand?
Any comments on my play? Check the turn maybe, or even the flop? Fold the river?

Bad call on the river on your part. EP may have shown being aggressive and loose earlier but (unless he is a complete maniac) he would not bluff/bet a pair that aggressively with you, who showed strength, and a smooth caller yet to act.

EP had small flush (maybe a set or str8 ), and Button re-raised with high flush