What is wrong with me?

I have been divorced for 2 and a half years and I just cannot get over my ex-husband.  I still love him very much and I found out about a month ago that he has remarried.  It sent me in a tail spend and I can't get out of it.  I want to just forget about him and find someone else that is going to be good to me and appreciate me but I evidently don't know how.  Can someone give me some advice and  try to help me thru this?  Thanks