There was a night where you drunk with your friends and accidentally spent night with your boss.

but Your rich boss discovers the baby you've been hiding.

Reonaille:"You had my son and didn't think to tell me? I'l be taking custody!"

you: "Please! you can't take my baby from me!"

Reonaille: "You had no problem keeping him from me so keep the tears."

you: "Don't twist this on me! You gave me a fake name that night!"

Reonaille: "Fine! Marry me then!"