[…] diseases characterized by inflexible and maladaptive patterns of behavior, cognition, and inner experience, involving several areas of functioning, such as affectivity, impulse
[ncbi.nlm.nih.gov]
The symptoms of borderline personality disorder include: a recurring pattern of instability in relationships, efforts to avoid abandonment, identity disturbance, impulsivity
[psychcentral.com]
Reckless Sex Impulsive behavior is one of the symptoms of BPD listed in the DSM-IV.
[verywellmind.com]