" And all that borrowed magic?” Des continues. “The process is called cobinding, and though Typhus made it sound cavalier and impersonal, it’s not like that,” Des says.

I stare down at my fae wine. “Then how is it?”

“Remember those horcruxes in Harry Potter?”

I begin to smile in spite of myself. “Are you seriously dropping an HP reference right here, right now?” I ask, glancing over at Des.

“I have your undivided attention, don’t I?”

“And all my love.”

I mean, I knew he was soulmate material before, but this pretty much just sealed the deal.

Des’s face grows serious. “Essentially, when you exchange magic, you’re transferring more than raw energy. You’re moving a piece of yourself as well.”

That’s massively creepy. "

― Laura Thalassa , Dark Harmony (The Bargainer, #3)