Kirkman says Loring was arrested on suspicion of stalking and violating a court order. Jail records show he is being held on $150,000 bail.
Patridge obtained a three-year restraining order against Loring in September. She testified at the time that she was afraid after the 24-year-old repeatedly came to her house and gave her disturbing drawings.
The arrest was first reported by celebrity Web site TMZ.