I think the author has potential, but I wasn't able to enjoy this book. First of all, the character development is micromanaged. There are pages and pages describing how small and insignificant Allen is. Even when you think he's been patheticized to death, there is another paragraph about his small penis, small apartment, bad job. Destiny is similarly overdone in his crudeness.
Then there is the insta-love, which is bad enough when it isn't used to describe abused partners who can't say no. I know, this isn't really a romance, but I didn't get a feeling of purposefulness from it, just kind of confused indecision. Allen thinks he's in love with this scary guy and the author is not at all sure he isn't, because despite being abusive and not nice, he's cute and that makes a big difference! If the author was aiming for a twisted obsession rather than insta-love, it didn't work for me.
I like books with bad characters, even as protagonists, so it isn't that. It is the failure to distinguish between the feelings one feels for an abuser and the feelings one feels for a lover. Those of us who have experienced both can say that they are not at all the same thing, even if they can have similar intensity.
And really, what adult doesn't know what an abusive relationship looks like? People get involved in them anyway because the person in question makes them feel something positive even among the negative- loved, respected, wanted, less alone, whatever. This was someone getting involved in an abusive relationship that made him feel worse. Huh? Maybe it was supposed to be magic, I don't know, it didn't make any sense or work, even in a "fatal attraction" way. I quit after only a couple of chapters.