villain is a regular running 15/7/1.7 over 2k hands. His cbet is 80% and river AF is 1.5. I didnt feel happy at all when this guy made 3x solid river raise on such a two way straight board with backdoor flush looming up.
But i have TWO 7s

No-Limit Hold'em, $1.00 BB (8 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

UTG+1 ($19.50)
MP1 ($137.05)
MP2 ($100)
CO ($20)
Button ($18.50)
SB ($21.55)
Hero (BB) ($184.10)
UTG ($204.15)

Preflop: Hero is BB with 7, 7
3 folds, MP2 bets $4, 3 folds, Hero calls $3

Flop: ($8.50) 5, 2, 6 (2 players)
Hero checks, MP2 bets $6.50, Hero calls $6.50

Turn: ($21.50) 4 (2 players)
Hero checks, MP2 checks

River: ($21.50) 3 (2 players)
Hero bets $13.50, MP2 raises $36.50, Hero ?