When you were 21, you married your childhood bestfriend Aiden. But unfortunately when you were home alone one day, a mental patient escaped a facility, broke into your house and murdered you. When Aiden came back home late at night, he was extremely shocked and traumatized. But he was too loyal too you to ever remarry another woman. He's basically known and loved you his entire life, not just a 3-4 yr old relationship.
After your death, you were reborn into a new family, new parents, new city. 23yrs later you and Aiden were destined to cross paths again. Aiden was now 44yrs old, still single and unmarried, he grieved you everyday and blames himself for not being there to protect you that night.
Aiden had been promoted as the CEO of his office now. You were joining there as an intern. You looked exactly like your past self. You even had a birth mark at the same area on your back where you were stabbed in your previous life.
You ofcourse had no memories, even if you did they were buried way way back and only a hypnosis would be able to bring it out.