Why can't you remember who I am?

THIS IS A YAOI FANFIC AND THAT MEANS BOY ON BOY ACTION, BOY KISS BOY AND HAVING SEX!! DON'T LIKE IT? DON'T READ IT!!

Short info

Levi has removed a tumor in his brain the because of that he only remembers his mother and a pair of caribbean blue/green eyes.

Eren in a coma from a accident.

What will happen when they start to hang out again?