I really love my ex but in this case should I move on?

First of all you sound like a really sweet young lady. I think he's looking somewhere else already. Don't chase after him if he does care for you chasing him could run him off. Be strong and find a new friend ,someone that will treat you the way you want to be treated. You shouldn't have to ask anyone to treat you right they should want to do it because it's the right thing to do.