"What reasons?" Because he has been under the impression that most, if not all of it, was about him (self-centered, much?). As for D'qar, he would have left the ship himself if it wouldn't have meant being surrounded by the Resistance. He doesn't connect her absence then to himself. "What were you running from?"

There's a lot about her and what she does that he simply hasn't bothered to pay attention to. That's becoming clear now.

The hand that isn't holding the blaster comes to rest on top of hers.

"He said that he wants to get to know who I am." Granted, he said this a few days ago before Ben was inclined to want that himself.