In truth Fenris wasn't sure why he trusted the man so easily either but if he was going by actions alone he had more reason to trust him than anyone else so far.

"I don't...really remember anything. Flashes of feelings...emotion." Fenris said slimply his hand curling into a fist against his chest. "When I...look at you. I get very strong feelings. Sometimes anger...sometimes..." he shook his head turning his gaze away.

"If nothing else, some part of me trusts you. So I will follow my feelings for now"