When Did You Become Mine?

"I- I don't want to continue thi- this relationship anymore. So let's stop it," Clara stuttered a little as she mustered up her courage to say those words that she wanted to tell him since two months ago.
Alaric who was checking his documents from the start, didn't give her a glance until she finished as the movement of his hands, "What?"
Clara licked her lips a little as she repeated her words, "I want to-"
But before she could finish her sentence, Alaric left his seat and walked towards Clara with large strides, shocking the hell out of her.
"Wha- What are you doing, Mr. Burton?"
Just after her words, Alaric closed the distance between them as he hugged her tightly in his arms and started to plant wet kisses on her neck.
"Mr. Bur- Burton?"
"Shh! This relationship will never stop, Mrs. Burton. You're mine and I'm yours. Always remember that," said Alaric as he possessively took her soft lips in his, completely shutting her mouth.
Even though, He said those words clear enough for her to hear, that question still remained in her mind, "When did you become Mine, Alaric?"