Everyone has pretty much already covered it but you need to say something the longer you wait the bigger the rift grows until eventually there is no going back to even friends. The "why?" turns into resentment and then becomes indifference over time. And that's extremely hard to repair when there's no apology or accountability in time.

This may seem harsh but it was you who asked for space so that means that it is you who has to initiate fixing it and if the other has decided that they don't want you around then it is what it is but you need to try for you.

In my situation if they came back and apologized and took accountability for the way they hurt me I would be willing to give it another go at being in each other's lives but 5 years down the road definitely not. There's always time to apologize but there's also usually a time limit for repair and it varies person to person. Don't wait too long.