Timeline

Meeting: Karen and Ryo meet for the first and she falls hard for

Dating: Karen and Ryo go out on their first date

First Time Together: Ryo invites Karen over to sleep with each other for the first time

Secret Romance: Karen and Ryo form a secret relationship

Found Out: Rebecca finds out about Karen and Ryo and blackmails them

Announcement: Karen and Ryo announce their relationship to the public

Proposal: Ryo proposes to Karen on a date

Marriage: Karen and Ryo get married