The surnames Montana and Calloway reference the two feuding families from Shakespeare's Romeo and Juliet: the Montagues and the Capulets.
Title is based upon the expression "Love's a Bitch".
It is clear that the outdoor shot of the restaurant "Anthony's Ristorante" at 26:00 is the same restaurant as Quake, where Piper worked in seasons 1 and 2.
First appearance of Balthazar Getty as Richard Montana
The Banishing A Ghost spell in The Book of Shadows reads, "To banish a ghost to oblivian pour this mixture over the departed bones
A palmful of pomegranate seeds grounded into fine paste
A pinch of comfry root
A pinch of blood meal
A pinch of clematis seed
A pinch of dried rhubarb leaf
Mix well add a chalice of twice blessed water and boil".