Local home-game,$1/2 NLHE, 7-handed action (pretty loose game which is making for decent action).

I'm sitting with about $225, playing pretty tight-aggro, when the following hand comes up.
:
A couple people limp when I'm on the button, and the CO, a somewhat a decent player who I have a lot of experience against brings it in for $12, which is the standard opening raise for a good hand at this game (people are bringing it in from between $7-$15).

I look down on A-K off-suit on the button and re-raise to $37 total.

Everyone folds and he calls after like 5 seconds.

Flop is K[d]6[c]5[h].

He checks and I bet $50, he almost instantly says "I'm all-in."

What's your read on him and what's my play? Is there a better way to play this hand regardless of what he had?

My gut was that he was really strong and I knew he was capable of bringing it in for a raise and calling a re-raise with 5-5 or 6-6.

My read was that he had A-K.

yep calling all day