Your sign prefers to have life and love a little more mapped out than other signs. That's a relationship strength!
You're not a diva, and are far from controlling. You're just not a fan of the spontaneous. It's too much pressure, and only brings a level of anxiety that's hard to shake.
Try baby steps if you want to become a little more open to last-minute plans or sudden road trips with your partner. Maybe your analytical, fact-finding mind can locate a great hotel, and your mate can handle filling up the tank and getting snacks for the road.