After you came to Devildom and got all seven of the brothers to get attached to you, somehow you settled down with the eldest: Lucifer. How? Well, you married him.

You two talked about it for a while whilst you were secretly dating (mostly so his brothers didn't throw a tantrum), and soon Lucifer decided to propose to you. It was very romantic, and Lucifer loved you so very much.

The wedding was expensive (thanks to Lord Diavolo) and full of tears of joy, sadness, and envy... mostly from Mammon. But it turned out to be a beautiful day.

Thus, now married for one year, you and Lucifer are happy together---living in the house of Lamentation, and his brothers (to his relief) eventually accepted that fact.

"My dearest, what do you think about this?" You were sitting on Lucifer's lap while he worked on paperwork, his free hand on the small of your back, which sometimes moved to your waist. Lucifer liked your opinions, so he'd calmly ask what you thought before making decisions.