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3betting JJ is never manditory. JJ is a great hand, but unlike AA or KK, when you 3bet JJ you turn it into a bluff, since you have to fold to a shove.

What can happen when you 3bet JJ from SB:
a) Button folds most of there range and you win a small pot
b) Button shoves, and you lose 12BB and don't have a chance to hit a set which would probably win you a stack vs Button's shoving range
c) Button calls and you are in a bloated pot OOP and have to hope they fold to your cbet

If you call
a) You can hit your set and stack them
b) If they are opening light (and would have taken it down with a 3bet PF), you can c/r or float a ton of flops and win their cbet
c) You can c/f on a scarey board and lose 4BB instead of 12BB

If you are really uncomfortable playing OOP, then you can 3bet, but when you do that you are turning JJ into a bluff, and you turn JJ into a hand that is only slighty better than T9s. When you 3bet JJ or T9s, you often will win a small pot with either one PF; you sometimes will win with a cbet on the flop; you will rarely improve on the flop, and if your cbet gets called, at least you know your T9 is no good.

With JJ, you sometime will have a strong hand like an overpair even when you don't improve, and T9 is never going to be a strong hand if you miss the flop, so obviously after you 3bet and get called, you'd much rather have JJ than T9. And there are times for other factors you might want to 3bet JJ, but in a vaccuum, I am calling with JJ in SB more often than I am 3betting it. A lot of posters seem to prefer 3betting JJ more than calling with it, but I don't, and I certainly don't think the 3bet is manditory for the reasons above.

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its all ok and right ,but you forgot one thing,original poster told ,that he "abusing" this villain with 3betting,so i think 3bet pf its clearly better option
And as i told b4,easy fold on flop