He can't think himself as someone who was taken. That makes him a victim, not someone who, when torn between opposing forces, sought refuge in the one that better suited him. There was Snoke, but Snoke's thoughts were so much a part of his early on that he can't identify where they end and his own begin.

Han regrets sending him away. He isn't lying, and his sincerity continues to challenge what Ben thought was true, just as it has since they reentered each other's lives.

"I don't remember hesitation on your part." Hadn't they been relieved to send him to Luke? He was a threat. They saw his affinity for the dark side. "I remember you being afraid of what I would do if I wasn't controlled."