Happy 50th Birthday to my X/Y.
I chose to remember and at least be the bigger person and say it. As easily as mine is or was replaced by how many others, this date and a few others, I cant forget. I wish I could remember all the dates like you did. Perhaps there was a reason I wasn't suppose to. I can only imagine being haunted by 5 years worth of dates and times and memories to go with them. Sure I have the memories, but even those are fading.
Hope your 50th is as good as mine was. Remember? I'm sure yours will be, you have many to chose from.