Deb is extremely impulsive and unpredictable. she is very unsure of who she really is and from semester to semester her goals shift dramatically. her relationships are chaotic and, basically, unhealthy. one day she will adore her partner and the next day she will hate them. given this pattern of behavior, a therapist might diagnose deb with

Borderline personality disorder

Explanation:

Borderline personality disorder -

It is type of mental health disorder , where the person is not able to manage the behavior and emotions in the day to day life , is referred to as Borderline personality disorder.

In this type of condition , the person is not able to manage the emotions and randomly hates or like some person .

There are very frequent mood swings and feeling angry and impulsive is the part of life.

Hence , from the given scenario of the question, Deb is suffering from Borderline personality disorder.

51% were unhappy, i think .   ; )