He's pretty donkish but its still scary. Hard to fold the turn. How would you play it? Ahead or behind?

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) from (Format: Bet The Pot)

MP3 ($41.15)
CO ($49.50)
Button ($52.95)
Hero ($79.75)
BB ($60.45)
UTG ($74.40)
UTG+1 ($52.20)
MP1 ($19.50)
MP2 ($54.60)

Preflop: Hero is SB with , .
UTG calls $0.50, 2 folds, MP2 calls $0.50, 2 folds, Button calls $0.50, Hero completes, BB checks.

Flop: ($2.50) , , (5 players)
Hero bets $2.5, BB folds, UTG raises to $5, MP2 folds, Button folds, Hero calls $2.50.

Turn: ($12.50) (2 players)
Hero bets $10, UTG raises to $20, Hero raises to $74.25, UTG calls $48.90 (All-In).

River: ($155.65) (2 players, 1 all-in)

Final Pot: $155.65