[_GUN_]

I think it's far more likely that he has 67 than K-10.

Why would he reraise you on the turn with a flush? He can easily call your small $2 lead and then draw cheaply to river a flush.

I don't believe he has the flush, if he does, he really played it poorly.
I don't believe he has KT, it's just unlikely, possible, but unlikely.

I think it's more like J-10 or 67. I probably make a crying call, but I'd never c/r such a small amount. I probably lead the flop or check-call, then put out a big turn bet to punish a draw. He could even have J-9 and been trying to just outplay you based on the board scare cards. The bottom line is that he doesn't know you have 5-8 and his play is based around a hand you don't have. He could even have AA or KK and played the hand in a totally upside-down fashion.