SO

Being in a secret relationship brings a lot of tension. So when Draco Malfoy was finally able to decompress, an unexpected surprise waited for him. He was already undressing your top, little does he know that you had recently tattooed his birthday in Roman numerals on your rib? And it was really majestic. V.VI.LXXX. The place of the tattoo only increased the fact of intimacy and privacy, a sign for anyone who might see this, that you belong to him. And the sight of you, permanently marked with him, is the last thing needed for him to lost any of the composure he might had. [more context in premise!]