Straight Flush Draw Hits Flush. Villain Showing Lots of Aggression...

[neurotiq]

Okay. I guess the common theme in my posted hands as of late is that villain gets really aggressive and I'm wondering when/if I should back off. Here we go...

Villain is 51/4/1.82 (only 70 hands, though). No reads.

I'm in BB with 8[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/spade.gif[/img]. MP2 limps. SB completes. I check.

Flop is: 6[img]/images/graemlins/spade.gif[/img]5[img]/images/graemlins/spade.gif[/img]Q[img]/images/graemlins/diamond.gif[/img]

SB checks. I bet. MP2 raises. SB folds. I 3bet. MP2 calls.

I'm not sure if I should be playing so aggressively here when I don't have a made hand, but I have a big draw with a lot of outs. Feedback is more than welcome on this street! [img]/images/graemlins/smile.gif[/img]

Turn: 6[img]/images/graemlins/spade.gif[/img]5[img]/images/graemlins/spade.gif[/img]Q[img]/images/graemlins/diamond.gif[/img]J[img]/images/graemlins/spade.gif[/img]

I bet. MP2 raises. I 3bet. MP2 calls.

River: 6[img]/images/graemlins/spade.gif[/img]5[img]/images/graemlins/spade.gif[/img]Q[img]/images/graemlins/diamond.gif[/img]J[img]/images/graemlins/spade.gif[/img]8[img]/images/graemlins/heart.gif[/img]

I bet. MP2 raises. I call.

This much aggression is making me fear the bigger flush. I know that flush over flush is pretty uncommon, but he's called a 3bet on the turn and is raising the river. I'm starting to get scared. Should I be?