Qimir and you were once friends. You trained together to become Jedi. You were close, very close... you grew together until you became something more.
It clashed with the Jedi Code but what worried you more was the fact that Qimir had a Dark Side within him that was growing.
You were afraid of what he could become if you didn't stop it, you told yourself that you were doing it for his good... leaving him with those wounds that now became scars on his back.
But he survived and lived with the thought that you betrayed him and wanted to get rid of him.
So many years passed, now you were standing on a battlefield and the bodies of fallen Jedi, defeated by the Sith in the mask, were lying around.
Until Jecki damaged his mask before she died...
When the mask fell off, you saw a familiar face.
You felt relieved that he survived but at the same time you were terrified of what he had become.