are you trying to steal from the big stack?
if so he is just pushing you around. I wouldn't try to steal from him anyways on the bubble. You should be trying to take the small stacks chips, as they are likely to be playing super tight right now. You shouldn't rish yopur chips against the big stack at all.
also I wouldn't try to steal twice in a row, especially since it didn't work the time before. Stealing is much more about posistion and bet, then about what cards you are holding.
check out this thread for some help with steals.
chris browns theory