(10NL) AK flops 2nd nut flush draw, family pot

[Ampelmann]

MP1 is pretty loose preflop, not much on his postflop play. BB is loose/aggro preflop and weak-passive postflop (28/8/0.9). Nothing else known.

Do you c-bet? As played do you call?

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

Stack sizes:
UTG: $10.70
UTG+1: $8.85
MP1: $5.50
Hero: $10.65
MP3: $11.25
CO: $8.60
Button: $11.45
SB: $9.35
BB: $11.75

Pre-flop: (9 players) Hero is MP2 with A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img]
UTG folds, UTG+1 calls, MP1 calls, <font color="#cc0000">Hero raises to $0.6</font>, MP3 calls, 3 folds, BB calls, UTG+1 folds, MP1 calls.

Flop: J[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] ($2.55, 4 players)
BB checks, MP1 checks, Hero checks, <font color="#cc0000">MP3 bets $1</font>, BB calls, MP1 folds, Hero?