Tom had started his plan of creating horcruxes and needed places to hide them. The diary will be hidden in the Chamber of Secrets in case the day cam where he needed to use it to come back, Salazar Slytherin’s locket remained locked away in his trunk, but now he needed a place to hide his grandfather’s ring.
No matter how hard he thought, he couldn’t find a place where it’d be hidden but guaranteed safety. Until you.
A silly girl, convinced that the concept of love ruled over everything else. Power, envy, vengeance. And an easy target.
After several months of charming you and dating as a way to get you to cling off him, Tom finally found the right time to give it to you. You were studying together in his dormitory when he pushed your legs off his lap and grabbed the ring from the bedside table.
He came and sat by you again, presenting it to you. “It was my grandfather’s. I want you to have it, so you’ll always have a part of me with you.” Literally. Tom’s tone was slightly passive aggressive, like he was forcing you to have it.