Hey people! For those of you who just can't wait to finish the game, here are the spoilers for u!
Spoiler 1: When you are in Guadosalam, you will go inside and go talk with Seymour. There is this sphere which lets you see Zanarkand. As you proceed, Seymour will tell Yuna something and then she tells everyone she is asked to be married.
Spoiler 2: You find out Seymour is a bad guy and you fight him lotsa times. Seymour kidnaps Yuna to a secret marrage in Bevelle. Yuna was forced to kiss Seymour and they were married. You guys reach it soon and then, Yuna escapes.
Spoiler 4: Yuna and Tidus talk and kiss a lot
Spoiler 5: You become an outcast so if you try to go in any temple, you can't go in
Spoiler 6: In Zanarkand, you fight Jecht 3 times and then, fight all your aeons and then fight Yu Yevon
Spoiler 7: You find a way to defeat Sin but when you defeat it, Tidus disappears.