Yosei in Proposal Daisakusen said this to Ken:
This is what Oscar Wilde said.
"A man wants to become a woman's first lover, but... A woman wants to become a man's last lover."
Regardless of the fact that you are a man, you desire in your heart to become her final lover.
While to Rei, he said this:
The person, J.S. Vase, said this:
"Men cannot give up on their first love, and women cannot give up on their last love."In spite of the fact that you're a woman, you cannot give up on your first love.
From "Finding Mr.Destiny":
"The first love doesn't necessarily have to be the first person"
Yes you are not my first love, but you are my true love -Si Doel Anak Sekolahan