Bad mood on Birthday

So this is my fiancé’s third birthday with me and he seems to be in a deliberate terrible mood every year and I don’t know why.

I really try to make it special every year and he’s currently on the couch not talking. It’s very frustrating, I just want to cry. I’ve spent about 5 hours over the past few weeks to make sure everything is special and perfect for him and I don’t want to make it about me, but I put in a lot of effort and he’s actually kind of grumpy towards me. And this has turned into an every year thing.

Does anyone know why he could be like this or does anyone have a S/O that is the same way?