Nut flush draw facing flop 3-bet

[zook]

I just sat down, villain is an unknown. I often make this flop raise, do you like it? What to do with the 3-bet? Doubt I have much fold equity here...

Full Tilt Poker - No Limit Holdem Ring game - Blinds: $0.50/$1 - 9 players - Converter

Stack sizes:
UTG: $129.60
UTG+1: $104.90
MP1: $229.85
MP2: $34.50
MP3: $91.50
Hero: $100
Button: $136.10
SB: $100
BB: $81.65

Pre-flop: (9 players) Hero is CO with 8 A
UTG raises to $2, 3 folds, MP3 calls, Hero calls, 2 folds, BB calls.

Flop: 5 T 4 ($8.5, 4 players)
BB checks, UTG checks, MP3 bets $5, Hero raises to $20, 2 folds, MP3 raises to $55, Hero ?

[ChrisTheFish]

I think i fold this.. looks like a flopped set to me, if you think he just has a weak top pair and the A is good then go ahead, push and gambol.

[DaNutsInYoEye]

I'd fold. You'd probably have to hit your flush to win and you have no fold equity.