Loving Libra by Stephanie West

Xen is trying to start a new life in a new town, but strange things keep happening. Topping that list is her neighbor. Something isn’t quite right about Libra, in fact, Xen isn’t sure he’s even real. Hallucination or not, Libra is built like a god and the way he looks at the world is exciting, swiftly drawing her in.
Everything is foreign in the disturbingly bright dimension Libra suddenly finds himself stranded in. Then he sees Xen and is instantly enthralled. She shows him wonders he never imagined and incites emotions he didn’t know existed, yet can’t live without.
Can a human made of light and an alien born of dark matter ever be together, or will cosmic forces always drive them apart?

In Loving Libra, anything is possible.