is this a reliable line in position?

[peterpjames]

Don't limp the button, either fold or raise. That will make the rest of the pot easier.

The flop bet is fine, nothing wrong with betting when checked to. But don't ever ever EVER bet this turn. What did he call the flop with that you are now getting value out of, a small pocket pair? You have showdown value and he most likely has a King, just check the turn, and eval the river.

Pete