Should she keep her ex husband’s last name?

11/17/20
Does she have to change her last name?

"I don’t want to change my last name for my fiance when we get married. I kept the last name from my ex husband and I don’t want to change it again. He thinks since I changed it once what’s the issue with changing it again. I shouldn’t have to change it, right?"
Pete Kelly - Weekdays 3-7PM