You know you're a freak and that, sooner or later, everyone you've known will leave you. And why wouldn't they? You're so different. An outsider. Maybe it's socially, because of your family or situation, your appearance, or, in a rare case, some ability that seperates you from others, but it's all the same, even if you're oppressed for your differences or if you slide under the radar. You're in a hell of your own design - loneliness.
Until you meet another freak, someone else incredibly different...someone who also wants to stay with you.
The circumstances, good or bad, under which you met don't matter, because you're not alone anymore. In fact, this person makes you want to look past any self-loathing or low self-esteem you may have and be better. At least they do on some level. Why they care, you don't entirely know. One thing is for certain, however: you'll do anything to keep them safe and by your side. Your situation may just come in handy, for once.