AJ in CO gets re-raised by SB

[zoobird]

This is in the AP Challenge a freeroll on Absolute Poker where top finishers from all their other multi table tournaments (including freerolls) qualify. About 600 left out of 1100+. Total prize pool is $1000. I'm in the CO, villain is in the SB. Blinds are 40/80, my stack is about 2500, his is about 2600. My read on him is that I've noticed him steal the blinds several times himself, and I've stolen the blinds from him several times. I've been expecting him to re-raise one of my steals at some point. I've got AJo and raise to 240 (3 BB has been my standard raise). He re-raises to 520. What do I do?