On any smartphone or any computer, make a profile on a dating site. The holder of your heart will find you. In a few days, you will receive a call or a text and you will answer back. The answers will become conversations that will span for days.
In any restaurant or movie, in any town or city, you will meet the Holder of Your Heart. You will dine with them, speak with them, and hang on to their every word. They will be the most beautiful person you have ever met.
Eventually, after weeks of meals, they will come into your life. You will start feeling drained and tired in their presence. They will blame you for the reason and ask you for more of your time. You will want to say no, but they are the Holder of Your Heart. The Holder will cut you off from your friends and family, control your finances and threaten violence. You will do everything to please the Holder, and it will never be enough.
The only escape is to leave. When you talk to them and ask to be let go, they will twist your words until you agree with them. Wait until the Holder is out of sight and leave quickly and silently. If the Holder finds you while you are leaving, they will kill you or spread so many lies to ruin you, you will wish you were dead.
However, if you succeed, you will receive item 2539, a small, silver, heart-shaped locket. It must never touch the other items. You will wear the locket to Hold Your Own Heart. Years will pass before you find it beating.