You didn't provide any details on how it happened, what did he say, how did you get together etc.
As I always say, there's no magic way to bring back the love ones that left us. If there were concrete and specific problems that you can point, you might be able to solve them by talking, but you didn't specify any so it's really hard to tell.
Sometimes we should let go, let the time ease the pain and just go on.
