The Seven-Year Itch, The Ten-Year Vow

Su Nian: Gu Yunzhou, long time no see.

Gu Yunzhou: How long has it been?

Gu Yunzhou: Su Nian, I was wrong.

Su Nian: Gu Yunzhou, I forgive you.

Su Nian's seven-year itch, Gu Yunzhou's ten-year vow of abstinence. After all the twists and turns, it still comes back to you. Fate brought us together, and destiny drove us apart.

My dear, it wasn't until the tenth year after your divorce that I lost you forever.