Help lol - most expensive thing I own

So my bf (long distance) were playing this “100 questions” game. One question was “what’s the most expensive thing you own” and he wanted me to answer that.

I said “hmmm….have no idea” and he said “oh yes you do” …

what does he want me to say, I think he wanted me to say something cute / sweet…but I rlly don’t want what he wanted me to say and he won’t tell me.😆am I stupid? Does anyone know what he wanted me to say?

Sorry - didn’t know where to post this lol