So my ex boyfriend and I talk, but I want to know if he wants me back, I miss him so much it hurts to see other girls flirting with him. I want to know how he feels about me. Help please?

It's going to hurt- you need to focus on the reasons that you separated. No breakups are easy, but the solution is not to return to the relationship every time you miss the person or get jealous- these are normal emotional responses to a breakup. You need to put time and distance between you.