Well, all I can say is to be happy that it ended well and that you two will be friends.
I had my first relationship back in May, and it lasted not even a full month before I ended it, as my heart was just not in it, and I felt his was, hence, it seemed unfair to drag along what I knew was not to be.
So I ended it, not easy. Though, it seemed to have ended relatively well, all things considered. Until... a couple days passed... and I got an email, with an attachment... it was a video he made: 16 minutes long, with editing, effects, voice over... and a soundtrack(!)... about why I was the "best" guy he ever met and should give him another chance. I watched the video with my hands over my face, thinking, "what the fuck, holy hell, good god, whyyyyy?!"
I replied, diplomatically, saying, "thanks for the video, but I made my decision," now knowing that it was indeed, the right decision. However, then began four months of near-constant attempts at communications: facebook, emails, etc., attempting to maintain some sort of contact every couple days at the least, 90% of which I never replied to, until he then felt he had "moved on" and we could "hang out again," to which I then had to state, "this needs to stop." At that point, after four months, he finally ended his attempts to maintain contact with me.
I wish him the best, but, the experience was rather unfortunate. My friends now just laugh and say, "only you," and it's quite clear: I'm crazy bait. I even ironically informed him on our first date that I am "crazy bait," and I guess that became a self-fulfilling prophecy.
Now, whenever I go on a date with someone, I ask them if they have skills in or access to video editing equipment.