Either villian is not TAG or he is on some serious tilt. However, other than his horrendous preflop play, he played this hand correctly (maybe a little strong on the turn). But he did have the gutshot and flush draw so you weren't getting him to go anywhere until the river. I liked the way you played the hand. Although I probably would have three-bet the river. Even though you lost, he played it like a TAG might play AK. I'm just confused about his 3 bet preflop from middle position. That is such a strange play. Now that I think about it more, the river bet/call might be best. You just got unlucky by some jackass playing like an idiot preflop and flopping a monster draw. Don't change the way you played that hand.