Antisocial and borderline people have different but similar overlapping symptoms. Peter's overlapping symptoms are: impulsive problems and involvement in self-destructive activities - including excessive spending on Wendy's credit card and he admits to using substances such as marijuana and alcohol. He's irritable and has anger issues - he's currently in the ER due to a physical altercation with Wendy and we're not sure if that's the only physical fight they've had. He has identity issues and uses multiple aliases. His relationships are unstable with others; he is currently involved with two women and is always on the move trying to avoid or meet new ones