Strange Spot 5NL - Top pair/NFD

[Lionheart]

Villain had been donkbetting and minbetting/raising a lot, but hadn't seem to get out of line yet. My preflop raise may seem a bit questionable, but the table was respecting my raises preflop (surprising for 5NL, I know). What's my line here?

PokerStars No-Limit Hold'em, $0.05 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: FlopTurnRiver)

saw flop|saw showdown

Button ($4.40)
SB ($4.38)
BB ($6.07)
UTG ($5.93)
MP ($5.68)
Hero ($5.47)

Preflop: Hero is CO with 7http://www.flopturnriver.com/phpBB2/images/smiles/heart.gif, Ahttp://www.flopturnriver.com/phpBB2/images/smiles/heart.gif.
2 folds, Hero raises to $0.2, 2 folds, BB calls $0.15.

Flop: ($0.42) 5http://www.flopturnriver.com/phpBB2/images/smiles/heart.gif, Ahttp://www.flopturnriver.com/phpBB2/images/smiles/club.gif, Thttp://www.flopturnriver.com/phpBB2/images/smiles/heart.gif (2 players)
BB bets $0.1, Hero raises to $0.5, BB calls $0.40.

Turn: ($1.42) Thttp://www.flopturnriver.com/phpBB2/images/smiles/diamond.gif (2 players)
BB checks, Hero bets $1.2, BB raises to $3.0, Hero ???