[Tupacia]

I think a check/call is best on the turn, especially given his bet sizing on the turn. As someone mentioned earlier, this is the perfect turn card to float, which may have been his plan all along given your aggressive image.

If he fires again on the river, you seriously have to consider folding because you've pretty much narrowed your range down to where it is very unlikely you have the K but are still willing to call down till the end. This puts you at hands like TT-JJ, QQ, AA, AsQs, AcQc, maybe even a hand like A9. You should lean toward folding on the river because if he fires out again knowing that you will probably call, his range is pretty much entirely ahead of you.