25NL - trips faces river raise from good player

[Prodigy54321]

CO is a solid multitabler..might be 2p2 and I think he was following around the same donk that I was for a while [img]/images/graemlins/tongue.gif[/img]...he is at 19/10/1.6

I am so confused by his line though..I couldn't figure out what he could take this line with..I wouldn't expect him to check a set on the flop let along the river..a flopped straight is possible, but again...I can't see him slowplaying like this...

then again, I can't see him raising this river with anything worse than I have...

thoughts?

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
6 players
Converter

Stack sizes:
UTG: $52.85
UTG+1: $72.10
CO: $25
Button: $32.35
SB: $24.75
Hero: $24.50

Pre-flop: (6 players) Hero is BB with 8[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img]
2 folds, <font color="#cc0000">CO raises to $0.85</font>, Button folds, SB calls, Hero calls.

Flop: 6[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/spade.gif[/img] ($2.55, 3 players)
SB checks, Hero checks, CO checks.

Turn: K[img]/images/graemlins/diamond.gif[/img] ($2.55, 3 players)
SB checks, Hero checks, CO checks.

River: 6[img]/images/graemlins/diamond.gif[/img] ($2.55, 3 players)
SB checks, <font color="#cc0000">Hero bets $1.5</font>, <font color="#cc0000">CO raises to $5.25</font>, SB folds, Hero calls.

Results:
Final pot: $13.05