I'm so sorry this has happened to you. Many of us know exactly what it's like to love an A.
You didn't cause it, you can't control it and you can't cure it. Unfortunately, A's are often manipulative and just as often, liars. Not all, but most. Once he was sure you would no longer play his game, he's taken his ball and gone home-and is most likely looking for an easier co-dependent.
Move on with your life and allow your heart time to mourn and heal. Consider al-anon for a while...you can learn some great things that apply to many things in life and it could help you avoid falling for another A.
Let us know how you're doing...we honestly DO understand the heartache.