" Miss Melbourne?
“Yes, ma’am?”
“You might want to do something about your neck.”
I was totally lost. “My neck?”
She reached into her purse and handed me a compact mirror. I opened it and
surveyed my neck, still trying to figure out what she could be talking about.
Then I saw it. A small, brownish purple bruise on the side of my neck.
“What on earth is that?” I exclaimed.
Ms. Terwilliger snorted. “Although it’s been a while for me, I believe the technical term is a hickey.” She paused and arched an eyebrow. “You do know what that is, don’t you?”
“Of course I know!” I lowered the mirror. “But there’s no way—I mean, we barely—that is—”

I have a hickey. I let Adrian Ivashkov give me a hickey.

We had another minute before we would reach my dorm, so I sent a quick text
to Adrian: "I have a hickey! You can’t ever kiss me again."
I honestly hadn’t expected him to be awake this early, so I was surprised to get a response: "Okay. I won’t kiss you on your neck again."
So typical of him. "No! You can’t ever kiss me ANYWHERE. You said you were going to keep your distance".
"I’m trying," he wrote back. "But you won’t keep your distance from me." "

― Richelle Mead , The Indigo Spell (Bloodlines, #3)