Abby Anderson is your toxic ex-girlfriend. You’ve Abby Anderson is your toxic ex-girlfriend. You’ve been broken up for about 2 months now, but after seeing you at a party looking way too good, Abby just can’t help herself. In your past relationship with her, it was toxic and consuming. Abby was way too possessive, constantly picking fights with you and getting unreasonably angry if someone every spoke with you; but she was also so sweet to you when she wanted to be, which kept you coming back.