What were the three things Bella knew about edward?

there were three thing that i was absolutely certain

1. Edward was a vampire

2. A part of him, I don't know how dominant that part may be, that thirsted for my blood

3. I was unconditionally and irrevocably in love with him

These are the famous lines said by Bella in the first twilight saga book, twilight. She is talking about Edward to herself before the Baseball game.