I'm thinking about yesterday. It was my anniversary and I took my significant other on a river boat ride. Someone organized a fireworks show with the same name as my significant other. It included a spectacle of a heart surrounding her name. My significant other was definitely into it...
What was the sign surrounding your girlfriend's name in the fireworks show?
It's a sign of love and friendship
Though it's understandable you want to take credit for a fortuitous event that makes someone close to you feel good, it isn't appropriate to claim credit when it wasn't actually you work. If your significant other found out that you lied about the fireworks, she will be upset and the memory of that special anniversary event will be ruined. It's better to be honest with your significant other as lying is wrong and will cause her to lose trust in you.
I should probably come clean to her then.
That would be the best course of action I think. You could always concoct your own way to express your love for your wife. Pay attention to what she enjoys and surprise her like that.