(10NL) nut flush draw, line check

[Ampelmann]

MP2 is 33/10/0.5, I saw him play TPnK passively in position, I saw him call off a half stack with TPGK against a preflop raiser. Nothing on the others.

How do you play AJs UTG preflop? Fold, raise? Limp OK at passive tables?

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.05/$0.10
9 players
Converter

Stack sizes:
Hero: $9.90
UTG+1: $23.65
MP1: $4.35
MP2: $7.85
MP3: $3.50
CO: $8.35
Button: $9.35
SB: $9.05
BB: $7.15

Pre-flop: (9 players) Hero is UTG with A[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img]
Hero calls, 2 folds, MP2 calls, MP3 calls, 2 folds, SB calls, BB checks.

Flop: 4[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] ($0.5, 5 players)
SB checks, BB checks, <font color="#cc0000">Hero bets $0.3</font>, MP2 calls, MP3 calls, SB calls, BB folds.

Turn: 5[img]/images/graemlins/club.gif[/img] ($1.7, 4 players)
SB checks, <font color="#cc0000">Hero bets $0.5</font>, MP2 calls, MP3 calls, SB folds.

River: 7[img]/images/graemlins/club.gif[/img] ($3.2, 3 players)
Hero checks, <font color="#cc0000">MP2 bets $3.2</font>, MP3 folds, Hero folds.