You're beat. Sucks to fold this but the blind steal didn't work, the bet on the flop didn't work, his bet on the turn says he has something huge. With him only calling preflop and not pushing it seems like he may just be trying to extract as much value as possible from a very strong holding. I'd be glad I've only committed this much to this hand and fold on the turn, the amount you lost is only a few blinds steals away.