After the reraise preflop and the smooth call on the flop, I thought maybe AK or AA, which is why I checked the turn. When he bet $15 on the turn, it struck me as a bet that would be made by someone with A and a good kicker, but not great (like AT). But I guess it was a bet that he thought I would call with a worse hand.

I guess the poker gods decided it was time to to send "suckout luck" my way, after burning me so many times at the $100 tables.