[why does she have to ask that after telling him to stay.]

I... [it's. really a hard question for him. he lets out a small sigh.]

...I don't know. Sorry, Elize. [he has a genuine apologetic smile.] Knowing that at least you want me to stick around helps, but there are still a few things I need to figure out.

[he could have easily lied and said, "Yeah, I'll stick around," keeping it vague. but instead he told her the truth. maybe not a full detailed disclosure right off the bat, but still the truth.]