Shove over his raise since only QQ and JT beat you here and he's pot committed anyways. If he has QQ it's a cooler, you can't really worry about set over set in 100 bb. He probably has QJ/QT, Q w/fd, or 2pair/set here.

By previously, does that mean you have more than 30 hands on the guy? If you do and if he knows you, folding 80% of your cbets might make JT less likely. 30 hands is really too small of a sample size to say anything other than that he's loose.