My character: Young woman, early twenties, drug addict living in a derelict area of an already bad city. The best she has going for her is a hookup with a Chinese food restaurant that gives her the occasional free meal, a drugged out abusive boyfriend that lets her sleep on his floor at night in a dirty apartment, and the ability to scoop his drugs when he passes out. She is the gothic type with piercings, black hoodie, sometimes only wearing torn up jeans and a black bra under a jacket. She's 'scum', despite being decently well educated.
Yours: Man, possibly dominate in nature. Starts to notice more and more how beautiful and intelligent she can be. But also becomes aware that she is becoming more hooked on heroin and looking increasingly thin and sickly due to her addictions. He wants to help. Build her up into something, give her a better life off the drugs. Perhaps by dominating her, or gently guiding her. Could be police type, young college man that once saw her in a class before she fell hard, or anything your imagination comes up with!
PM me if you'd like to try this out!