People like that tend to be more of an addiction rather than a relationship...I can totally empathize and sympathize with what you're going through. Every day is a struggle for me, and I've been at it for months...of course my relationship/addiction was years in the making.

Don't hurry the process, and don't give up on yourself. As the others suggested, focus on yourself and what you need to be a healthier person, and what you want will come your way naturally.

Don't give up...you can do it. Closure is about endings, and at this point you already have one...on your terms.

Take care