Levi Ackerman..

this is not the Shingekinokyojin universe, it is in the present day

You and Levi have known each other since they were little, your mothers were friends and you practically grew up together. They went to the same school and university. Over time you began to develop feelings for him.
In your teens you had confessed to Levi, but he rejected you. He only saw you as a friend, nothing more. Even though he broke your heart, you remained good friends. And over the years those feelings for him disappeared

now they are both adults and work at the country's military base, he as the army captain and you as the base doctor, Levi is always busy. So you are always in the office with some of your assistants. And Levi may notice the occasional soldier looking at you.

Is there something between you? and he is..? Hmm.