twincestual and proud! D1 want?

My CBD "twins" need a little friend! They go by Miles and Theron, they're both fifteen years old and live in District One. They've grown up thinking of themselves as twins, but truthfully this was a clever lie created by a kind-hearted woman who thought they'd survive longer if they had a partner in crime. Though they struggle against it, both twins have fallen in love with each other, and deal with it in different ways.

Miles has become a dashing street-rat searching for the siblings he knows he spent his first few years with, and Theron focuses on her musical passion and cutting her wrists because she has bad, bad blood she needs to bleed the love out of her veins how can her blood love miles blood so much? I'm looking for a third party to get in between them and really rough up the relationship by either being aware that they are "twins" and suspecting they are in love (eww! gross) or not being aware that they are twins, and trying to woo one of them/do something insane. The plot may end up in their discovering their true bloodlines, but thats not really important to me right now.

Right now I want some good, old fashioned creepy incest with a friend who can just add to the weirdness of it all.

WANTED - a friend who is aware/unaware that they are "twins." Female or male. Possible romantic interest for one of them. Better friends with one "twin" and slightly hostile towards the other. Aged between twelve and eighteen years.
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Heres some backstory because their histories really don't give enough:
MILES VU KNIGHTLEY, aged 15 years and two months was born in a family of five, spending three semi-happy years with a mother, brother, father, father's lover, and her illegitimate son. Through a series of unforeseen circumstances, his father's lover and his father's wife left their rag-tag bunch. Together. And as a couple, they decided to take their two older sons along, and leave Miles with a mentally unstable excuse for a man who wondered how on earth things had ended up so very screwy. Within a few weeks, he'd tied a rope around his neck and joined a list of men unable to handle the pressures of single fatherhood, leaving Miles to the mercy of District One's most brutal orphanage at the ripe young age of three. Luckily, the boys father had also had an affair with a fresh young woman at the institution, and he was kindly looked after...

meanwhile, Lyra Cadence Theron, aged 15 years and seven months, was born to a kind older couple who had already lost two daughters to the perils of teenage romance, effectively leaving them heartbroken, and their comfortably sized home utterly empty of life. The two were wonderfully happy to have conceived, and raised their littlest girl to know nothing of familial drama, nor of her rebellious older sisters called Harmony and Honor (rather punny, if you'd asked the matriarch of the family). When Lyra was two years old, she developed a stuffy nose turned cold, turned cough, turned deadly fever, leaving her mother as the sole parent to a tiny child. Without her financial and romantic partner, Lyra's weak mother, herself a sufferer of the deadly fever, fell into a pitied state of depression. She soon became unfit for motherhood, and another seemingly harmless cold that struck Lyra at the age of four stole away her mother. Luckily for Lyra, she too had been a family friend of a ripening, boisterous young woman who took orphans under her wing...

Seeking a backstory which suited the toddlers infantile memories of their parents, Miss Genner crafted for Lyra and Miles entirely new identities. She told them their names were Lyra Theron and Miles Vu Vagrant, twins born to a set of ill-bodied and ill-minded parents who had separated when they were new borns. Miles was taken by his father, and raised among aunts - which explained to him memories of his true birth-mother and siblings, whilst Lyra was taken by her mother and step-father. They were both orphans, and didn't they see the similarities in their appearance? At four years old, when the two properly met, they did in fact appear rather similar. Both were impish brunettes with small frames and smatterings of freckles. Both were thankful for the safety and comforts that came with a partner in crime. Not until Miss Genner passed away during their tenth year were they left entirely alone, with all the questions that came with a subconscious understanding that their stories didn't add up.

Not until they turned twelve, did the imperceptible shifts in their appearances accelerate to the point that they no longer looked like siblings ever bother them.

And not until they turned fourteen, and individually came to feel what it means to be in love, did they question the entirety of their identities.