Sounds like you're going through a rough time!
First of all, all marriages go through what I call the \"After the honey-moon stage\". That means that you're kind of falling out of love.
If you are willing to try, the spark almost always comes back and is even better than before.
Here's the deal; attraction to your ex is normal. You shouldn't get freaked out about it, but you also shouldn't focus on it or encourage it. Remind yourself that your husband is your true love. You pledged yourself to your husband for life, and that shouldn't be broken.
If your husband isn't acting lovingly towards you, figure out what it was that attracted him to you in the first place. Was it your smile? Smile at him! Was it the way you desired him? Desire him! Was it the way you looked up to him and thought he was great? Try that!
It doesn't have to feel true at first, but if you act that way long enough it will become true.
There is a really good book called \"Created the Be His Helpmeet\" by Debi Pearl. It is VERY helpful if you are having a rough time in your marriage. It does have a few odd parts, but it is mostly really good. I would recommend getting it and reading it.
If your husband is abusing you, you don't have to put up with it. Report him to the police. Tell him that you support and love him (remember, love isn't a feeling, it's a choice), but that you can't allow him to hurt you like that. In the worst case scenario, visit him in jail and tell him that you look forward to the day that he comes home.
Whether you feel that it was a mistake to marry him or not, you are now with the one that you were always meant to be with. Choose to love him and support him.
If it is too hard on you to see your ex, don't communicate with him for another 4 years. Don't lead yourself into temptation! It is hard to be married, especially when your husband isn't acting good, but it can also be wonderful.
My Mom and Dad have been married for 24 years. There have been times early in their marriage when my dad was not a very nice person to deal with and vice-versa. But my Mom and Dad believe that marriage is for life. Right now their marriage is better than it ever has been before (and believe me, it's really good).
The book that really helped my Mom was \"Created to Be His HelpMeet\" Please try reading it.
Good luck hun! Hang in there! If you need to vent this is a great place! I'll be praying for you! Let us know how everything goes!