[AdamL]

You know the BB is a 2+2er and he knows your tendancies. He tends to think you get a little out of line on the aggressive side and as a result has paid you off for some good hands in the past. He also knows you are a very thoughtful and professional player, so he does respect your play though.

You open in the Button at a 6-handed NL table with $20 stacks (which are still close to their buy-in value) and 10c blinds. You raise with A9 to 40 cents.

The SB folds, and the BB (the opponent described above) thinks for a second and calls.

The flop is QJ5, rainbow I think.

He checks, you bet 50 cents. He raises now $1 for a total of $1.50. The pot is $2.85 and it costs you $1 to call.

What's your move and why?

This hand requires a considerable amount of thought to understand, so take your time with it.