You have nothing to be sorry for. -she retorted, harshly biting onto her own lip, before making another attempt at wording out her thoughts- I don’t know how to explain it, though, nor have a clear, logical reason. It just…happens.
[‘he only shakes his head, the realization that she’’s having a hard time there popping into his mind] You don’t have to explain it. Just forget it , okay?