I need help pls but I vaguely remember the story

I believe it was a book on Wattpad, about a girl who enters an academy or something like that. She meets a powerful dude, and at first she didn’t like him. Then she finds out that she’s just like the dude, she has powers. Then she has to kill a dragon with the powerful dude, but shit happens and the dude has to self sacrifice himself.

I believe it was about magic. And there’s a part about the dude making an intricate spell to kill the dragon.

This was a series, and in the next book she’s old and wandering about the world, and the dude is still alive but he’s been in a coma for a long time. So she’s just waiting for him and kind of just existing and creating trouble. I also remember that he does wake up later on in the series, and they were granted a title but ended up not wanting it. The girl also has to solve political problems since the kingdom does a shitty job at it. I can’t find it on wattpad, and it was actually a good written book.