1. It's fascinating.
2. It's intriguing.
3. I couldn't tear myself away.
4. I couldn't put it down. (this phrase is used for en extremely interesting book)
5. I was so into it, I lost track of time.
6. It does nothing for me.
7. I was bored to tears.
8. I was bored to death.
9. I was dying of boredom.
10. It's about as exciting as watching paint dry. (= it's very boring)

Jasmine

Jasmine Step 11

Good night, my handsome prince, whispered Jasmine at the end of their flight.
Then Aladdin kissed her. Aladdin was so happy, he felt as if he was floating on air.