Originally Posted by
lkjhgfdsa
That was my impression, but I still think he could be ISTp. ISTp's would rather have people not ridicule their feelings so they try to mask it with a "I don't care about you enough" behaviour kinda vibe, probably Fe PoLR, and blow the 'ridiculing' possibilities out of proportion because of weak Ne, but they are not afraid to use their Ne as you can see it helps him prevent from showing his feelings, to the extent that he tries to show none at all. He'd rather show it to people he can trust to people who can show that they are willing to keep strong personal bonds.
Also, about his past, ISTp's weak Ne can blow anything out of proportion so even if they have not had a past like Sawyer they can act like they do. ESTps would be adverse to using Ne.