He doesn't feel like himself. He hasn't felt like himself in ages now, since before he turned up in Darrow, and for Simmons to reach out to him like she does... he's not certain how to react to it. He notices the expression on her face shift and wishes he hadn't taken that step.

"It's... it's difficult to say," Fitz says, because sometimes he thinks there is, and other times... like now, for instance, he still can't manage to string the right words together in the right order. Not that he wants to admit that, that this is who he is now.

He's not the person Jemma last spoke to on the bottom of the ocean, and he resents himself for it.