Finding the engagement ring...

my boyfriend and I live together, and while he was at work one day I decided that I needed to deep clean the room. I didn't know he was planning on proposing AT ALL, so I wasn't searching for anything I was just cleaning. As I was cleaning, I saw something on top if my bookcase. I climbed on the chair next to it and it was a booklet for an engagement ring, with the words "Pick up date: 12/19/17. After seeing that I immediately got down and didn't know what to do. I don't want to spoil it. I feel really bad that I found it though. He has been wanting to go to see christmas lights on the 23rd, and has been pushing for it to be that specific weekend. Now I know why he was, because he gets the ring in the 19th. Am I a horrible person? I don't want to forever feel bad about finding it because it was a complete accident. What do you think?