I dated my best friend whenever I was 18. I am talking BEST FRIEND. We had the same friends, same memories from high school, went through big teenage growing up stages together, and were inseperable. However, we ended up breaking up. (his idea) and things were never the same. He always said that he didn't know whether or not we would ever date again...and I saw this as a glimmer of hope. Now, looking back, I see that this was his way of keeping me hanging on without having me there. After alot of hurt, I finally moved on, and now I am happier than ever! It takes hurt to grow and learn. Easier said than done, believe me I understand! But, look at it this way: He broke up with you because he doesn't want to waste your time, but he still loves you. That's respectable though, isn't it? You have to appreciate his honesty even just a little bit.
Make sure to keep it just as friends. If not, you may end up experiencing more pain than is necessary. If he needs time, this will be the best way to either #1 get you to start getting over him...and #2 Let him see that you are strong and perhaps respect you more for not waiting to be with him. Geeze, I guess it's obvious I have been there before.