KK - Too aggressive or too passive?

[moondogg]

Loose, fairly aggressive table. UTG is a loose PF raiser, has PF raised the last two hands, but slowed down when he missed the turn.

Party Poker 0.50/1 (10 handed)
moondogg has K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img] and is MP2

UTG raises, moondogg 3-bets, Button folds, SB calls, BB calls, UTG caps, moondogg calls, SB calls, BB calls

Flop(16 SB): 9[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/club.gif[/img]

SB checks, BB checks, UTG bets, moondogg raises, SB folds, BB calls, UTG 3-bets, moondogg caps, BB calls, UTG calls

Turn(22 BB): 5[img]/images/graemlins/spade.gif[/img]

BB checks, UTG bets, moondogg raises, BB calls, UTG 3-bets, moondogg calls, BB calls

River(31 BB): 7[img]/images/graemlins/club.gif[/img]

BB checks, UTG bets, moondogg calls, BB folds

I didn't think it was reasonable for him to have two pair with his PF cap, I started to slow down because he may have 99 (because of his loose raising) or AA (capped PF). Too weak? (Folding was never a consideration)

Results in white: <font color="white"> UTG showed JJ, and MHIG </font>