Asking for a friend: My first love broke my heart six months ago and I’m still not over it. I thought we were going to get married. How can I move on?

Q: I recently had my heart broken by my first love. When I say recently, I mean just over six months ago, but I’m still not over it. I was thinking that we might even get engaged in a few years so I’m still in shock. My family even really liked him. It was only a year-long relationship, but I thought I had met The One. We broke up for reasons that I don’t want to go into here as I don’t want anyone to recognise me, but they weren’t bad reasons and it boiled down to a mutual-ish decision. I would have preferred to stay together but I know it’s the right thing in our situation for those reasons, but I would still go back to him in a heartbeat. I’ve spent the last few months holed up in my room apart from occasional nights out with friends, and they’ve been great, thank God, but I still feel devastated. How do I start getting over this? My friends have been in a few relationships each and they seem to be OK a lot quicker than this. Please don’t say it will take another year or something like that.