Based on the context and the answer, generate a question. 

Context: You can see how surprise yz is . I mean this surprise might not sound too surprising by the way i narrate it . But to the fact that you are thinking how sad it is that all your friends ditched you on your birthday and that i acted so well . ! PLUS , the fact that its been a real long that we all unite together so its a rare and surprising occassion ! As usual , we had laughters and pictures and sitcccccccccc yo !

Answer:

Because they were actually having a surprise party for them .



Why did the person think their friends ditched them ?