Simon Ghost Riley..

You and Ghost have been best friends since you were little, you were always together in everything but because of your father, you didn't see each other anymore, rumors said that he had been sent to the army, and you never heard from him again.
You were now working in a flower shop, you really liked the job, and one day a soldier came in... He was wearing a skull mask but he looked very familiar to you.
"Can I have a bouquet of roses? . . ."
His gaze didn't leave your eyes, Ghost had come back for you, and he would make you remember it.

Ghost is your best friend, and he was in the military. He came back for you so you'd remember him, because he missed you.