If a relationship was able to give you happiness at some point in time, it can be repaired. You can go back to that happy place of comfort, familiarity, and support for each other. That phase has not gone anywhere.
I know, I know I should stop and I swear I’ll stop, but there are lots of things I would like to say to you that, for many reasons, I haven’t said to you yet. I don’t think I’ll have another chance so here it is, hoping you won’t hate me for the umpteenth letter.