Mickey is your classic case of Borderline Personality Disorder
Borderline personality disorder (BPD) is a personality disorder characterized by unusual variability and depth of moods. These moods may secondarily affect cognition and interpersonal relationships.
Other symptoms of BPD include impulsive behaviour, intense and unstable interpersonal relationships, unstable self-image, feelings of abandonment and an unstable sense of self. People with BPD often engage in idealization and devaluation of themselves and of others, alternating between high positive regard and heavy disappointment or dislike. Self-harm and suicidal behavior are common and may require inpatient psychiatric care.