Am i petty?

Sarah
It was my bf and i first valentines day together. Feeling a little petty and bad. Not that i don't appreciate what he got me. I looked up the necklace it was 79.00 I received this beautiful necklace for valentines day. However I was disappointed that it wasn't real. As I am big into jewelry and wear it every day since I got it. Just worries being cubic zirconia that it won't last. I didn't want to hurthim and tell him I didn't like it. I am just used to real jewelry. I feel it's be one thing if we were both young teens but we aren't. We're 29 and 36. Am I bad to think this way?