It is very easy to get a restraining order against a person, and they are very common ploys in divorces especially when custody is an issue.
I have a buddy going through a separation...
Out of the Blue she moves out and gets a restraining order.
She calls him to meet for lunch at her job, which he later gets arrested for violating the restraining order.
She calls him asking if they can work things out and SHE MOVES BACK home, he calls her at work and gets arrested for violating that restraining order again. BUT SHE IS LIVING AT HIS HOUSE.
http://orangecountyda.com/home/index.asp?page=8&recordid=1101