For whatever reason , Ennis had changed , and Jack was excited to be the recipient of his new feelings . Still , a small part of Jack remained guarded . Ennis 's history required a bit of self - preservation , and Jack could n't help that . It hurt , but it was necessary .

Question: What may be the reason Jack remained guarded ?
Answer: He was afraid he was going to be attacked .He was afraid of getting his feelings hurt .None of the above choices .He was afraid of good things happening to him .