NL$50 Gutshot+flush draw in RR pot

Open raiser has been opening pretty much everytime folded to him in LP. His stats are 32/13/2. No real postflop read though. My image is pretty TAGgy, maybe nitty because he's been opening alot before me(don't really remember). Not sure what this bet means...

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

UTG ($61.70)
UTG+1 ($19.45)
MP1 ($39.95)
MP2 ($13.25)
MP3 ($82.80)
CO ($51.70)
Hero ($80.05)
SB ($29.05)
BB ($30)

Preflop: Hero is Button with , .
4 folds, MP3 raises to $1.5, 1 fold, Hero raises to $6, 2 folds, MP3 calls $4.50.

Flop: ($12.75) , , (2 players)
MP3 checks, Hero bets $8, MP3 calls $8.

Turn: ($28.75) (2 players)
MP3 bets $5, Hero?????????

Looks to me like someone that hit a Queen on the flop and it hoping you'll fold to the turn bet. Or maybe even high PP.
If he always opens in late position then he obviously isn't that great a player, especially as he's playing 32% VPIP.

Most of the time i'd put in a raise here hoping to take down the pot, even if you don't you still have outs.

Clar