Renee, Your place fo work is open to the public and there's no law that will change that unless he's violent towards you. Restraining orders are for those who fear for their lives, i.e., your xh hasn't threatened you has he? Don't go borrowing trouble. Stop listening to others...that someone is hoping that you'll up the drama so that they have something to talk about and are hoping that you'll do it for their entertainment and gossip. You are far better than that....
Leave it alone...if your paths cross, speak and continue doing whatever it is you are doing. You live in a small town and sooner or later you will be bumping into them. Don't give the folks fodder for gossip.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.