Responses
Was thinking of the same thing, and it may also be due to the reasons that it would take a lot/burden the 'normals' to grant him his wishes knowing that he's extensively hardcore with his approach. Or more simply said, other ppl who's not into bdsm wouldn't be able to cater to his emotional needs in this case due to his nature.
i mean the only logical explanation i have is that he needed release through pain and having the ml fulfilling his wishes just after heaving his voice and knowing he's upset felt like an act of affection towards him...?