[soah]

You betting makes no sense. You severely overbet the pot on the flop, and then underbet the turn. Your opponent probably can't make sense of it either, which could prompt him play his hand unusually as well. I have a quote stuck in my head from Ciaffone's "Improve Your Poker"... something about if your opponents deviate from standard play, then you need deviate from standard play as well in order to play optimally against them. In this case, you made the first departure from standard play with your flop bet, and it's pretty much impossible to figure out what your opponent thinks of it. I think I'm going off on a tangent though... when it comes right down to it, I can't see myself folding two pair on this board heads up with 50bb stacks. But, I wouldn't bet it the way you did.