Hmm I guess we'll never know for now, but tbh I doubt that he's a sociopath. I feel like maybe past traumas made him numb/unable to live life to the fullest? Or maybe something else? Perhaps related to past relationships? Idk, but I really don't think he's crazy of smth.
But there's gnawing feeling of dread in me that's saying "something is off" xd Maybe he's a sociopath or sth ' o ')