It was late , I had promised Adam I 'd call him ( because we have n't really spoken since June ) , and frankly I just did n't want to have confrontation anymore . Being upset exhausts me . I did n't sleep too well last night . And want to email / call him this morning but know that I wo n't .
According to the above context, answer the following question.
Why did the narrator get such poor sleep ?


They had a fight .