Do I have the right to spend my own money when I'm engaged?

I am getting married in just over a year, but I spent just under $6,000 on a Real Doll sex doll last week and my fiancee is furious. I make good money so it doesn't get in the way of us paying for anything, and like I said, it's my money. The wedding is covered, our bills are covered, I feel like she's trying to tell me what I can and can't buy.