Top Two on Paint Flop

[BZ_Zorro]

How do you play 2 pair on a paint board? This situation comes up a bit, and it usually involves me or someone else getting stacked.

CO is maniac preflop (50/21/1.1). Raise size is normal, I give him no credit for a high pocket here, he could have anything though. Post flop he's very weak and passive, with or without a good hand.

MP3 is your typical $100NL calling station (24/3/0.6), loves suited connectors, broadway and A-face, rarely raises.

Party Poker No-Limit Hold'em, $ BB (10 handed) converter

MP1 ($105.35)
Hero ($120.85)
MP3 ($104.3)
CO ($96.5)
Button ($112.15)
SB ($75.4)
BB ($40.1)
UTG ($86.05)
UTG+1 ($89.75)
UTG+2 ($54.95)

Preflop: Hero is MP2 with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.5.
<font color="#666666">2 folds</font>, UTG+2 calls $1, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $3</font>, MP3 calls $3, <font color="#CC3333">CO raises to $8</font>, <font color="#666666">3 folds</font>, UTG+2 folds, Hero calls $5, MP3 calls $5.

Flop: ($26.50) K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $20</font>, MP3 calls $20, CO calls $20.

Turn: ($86.50) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>

What now?

Comments on other streets welcome too.