What is the worst thing you can do for someone who doesn't like surprises? Arrange a suprise party, tell them they have to get up now, won't give valid reason so you get up and drag on old clothes because washing is in the machine ready to go on line. That's done then told you're going out now. No time for breakfast. No time to have a shower and dragged out wearing old clothes and garden shoes. Then driven miles making a huge detour because idiot realises an hour early and you still have no idea why it's so important to go out. Not your Birthday until following week. Arrive and taken into tiny room with lots of people yelling when you walk in. Burst into tears and demand to be taken home. Cousin takes you off to calm you down; she had questioned the wisdom of a surprise party as she knows you well. Your hair is greasy and hasn't seen a brush. Your friend has booked a room so takes you in for shower. You still have to put your old clothes back on.
Most miserable day of my life. Each and every guest had questioned the surprise when they received the invitations. Guests felt awful, I felt awful.
End of relationship.
Now married to wonderful, caring husband who wouldn't dream of arranging a surprise, other than amazing, handcrafted by him, surprise presents.