Come on you are just being results oriented just because you hit two pair on the Flop. definitely a fold. You might even want to consider folding to the 2BB raise unless you think you have a good skill edge against that guy (and also if blinds are tight and are expected to fold a lot, or if blinds are bad and you want them to come along and make many postflop mistakes).
I would most of the times either fold or 3-bet pre-flop. Don´t think J8s is strong enough to flat on the BU. Easy fold against squeeze. Even if you flopped two pair, SB might easily have there set.