[electrical]

If you knew your opponent could beat Jacks (and he gave that indication) your Eight was 8[img]/images/graemlins/club.gif[/img] and Nines were live, you'd be correct to continue, (but even then not re-raise) because of the added additional ways you could make a pat hand.

As it is, the extra raise on Third is pointless. In situations like this, where you can be pretty sure your opponent can beat your one pair, you keep the pot small so you can avoid paying off two pair. For this reason I would have checked with the worst hand on Fifth and folded Sixth, by which point you may be drawing dead or to three outs.