It's good you're being honest with yourself. You are broken up, but you're clear you would like to be back with him.
But it looks like he's not so sure. He's looking at other girls; but you're sitting and waiting. That's not fair to you. (If he finds a girl, you'll be left sitting. If he doesn't find a girl, at least he's got you waiting as a "backup.")
You need to meet people. You need to spend time with other friends, call other friends: and not just talking about this ex, either!
You're a loyal gal. Don't let that love be used against you. It's ok for YOU to look around, too. And maybe you'll find a boy who loves you, and wants to be with you, as much as YOU love and want to be with that ex.