I think you should get back with him.. because, unless you do, you are always going to think of him as he was at the good times in your relationship (what I call the 'idea' of him) and not how the relationship actually was. Unfortunately, this means you are likely to split up a second time.
You will always feel something for your ex, because you were intimate with him and was, at one point, a big part of your life. It's natural that you should still feel for him.. but I think you should accept that it's time to let go. You said yourself you are ready for something new, and there's no point in you going back to your ex just to be unhappy.
You can still be friends.. I think you may just need a little bit of space for a while. It will make things easier for the both of you.
On the other hand you could try and take things very slow with him and see how they pan out.. but I think you're better off moving on.
Good luck x