The Holidays alway bring out the what if's...people are lonely and wonder about what could have been. I would just keep him as a friend for now and see if he has changed. I bet you have, your stronger then you thought you were! Have you dated at all? If not, go on a few, just as friends, have fun meet new people, Mr Right could be around, your just not paying attention because you are thinking of what you don't have.
You are in Florida right now on vacation? Enjoy your self, I always have a great time whenever I go on vacation. No laundry,cooking, or cleaning
Pamper yourself, relax, meet new people.
Write down a list of what YOU want and don't want. It really helps keep things in perspective. I just lent a girlfriend of mine a book: The Aladin Factor
She just called me crying, asking why I never lent it to her before?! She wasn't ready to read it before!!
Anyway, Good Luck with whatever you decide, just be sure it is right for YOU!