Circumstantial Breakup

I am a college student living in the United States and my ex is a construction worker from England living in Australia. I met him at the start of my study abroad in Australia and we were inseparable the entire time. It was genuinely the best relationship I have ever been in, and I was the happiest I have ever been in my life. He broke up with me right before I left to go back to the United States because he was scared of doing long distance, especially since I was his first relationship. We are still talking, because we ended on good terms and I have hope that he will change his mind, but I feel like I seem a lot more bothered about this breakup than he does. Any advice??