I am a masochist and I think that issues in my past and my MI definitely play into it for me. While I do process certain pains as pleasure and get aroused sexually from it, receiving pain can also just be a coping skill to quiet the noise in my head and not be sexually based as well. I guess you could argue it is a way to self harm without really self harming since my partner, who is a sadist, does it for me...I am quite honest with myself about it.