Tukenecegiz - Sezen Aksu, can anyone tell me what she is singing about in this song? I don't need exact lyrics, just what the song is about in general. Thanks!

Lyrics and composition by herself, Sezen Aksu depicts nd ending love going through an unsettled period. The two lovers don't feel happy neither together nor apart. She suggests their love and therefore their joint life will end when either of them find solace in someone else.

P.S. Your nick seems incomplete. Did you want to get a nick lie Yeri_doldurulamayan or Yeri_doldurulamaz? If you are looking for a word to give a similar meaning you'd consider "biricik" which means the only (beloved) one...

regards