Help!

So my ex bf and I ended on good terms because he wants kids in a few years and I'm not ready for that. However, we've been having sex (isn't as good as it was before) and wants to get back together. Then he changes his mind. I'm not completely over him and he makes these comments about me being the love of of his life. Should I try again or just move on?

Sorry about the description. It's worse than this and I don't want to write an essay.