the_debt_of_time

"What is it?"
"Invigoration Draught. Concentrated," Sirius replied. "Trust me, mate, you're going
to need it."
"For what?"
Sirius smirked as he walked back to stand behind her. "A get-well-soon gift."
Mia kept her gaze trained on Remus, willing her pulse to slow to something
resembling excitement rather than panic.
Remus watched with a curious expression, looking confused when Sirius wrapped
his arms around her body where her robes were tied at the front.
With long fingers, Sirius tugged at the strings and then very slowly pulled at the
fabric, letting it slip away from her bare skin like water. He revealed the valley between her
breasts and the hint of her stomach and navel.
Remus's lips parted, and his breath quickened.
As Mia and Remus kept eye contact, Sirius had his chest pressed against her back
tightly, lips mouthing the side of her neck while arms wound themselves around her waist,
one hand palming a breast while the other slipped south and dipped into the apex of her
thighs.
When Sirius's finger brushed against her clit, Mia gasped and arched her back a little,
still staring at Remus with her mouth open. She imagined that, had he not been so ill, he
might actually have said something or even tried to leave, embarrassed. Instead, he sat
there, looking shocked as though he were wondering if he was hallucinating.
If their display had not been clear enough, Sirius pulled his hand away from her
breast and used it to tilt her head to the side, revealing her bared shoulder.
Remus's eyes widened in perfect understanding, and he shook his head. "No.
Absolutely not."
"Absolutely yes," Sirius countered. "I'd like to think I'm being very mature about this
right now, Moony. Don't make me resort to less than honourable tactics in order to save
your fucking life."
"You can't be honestly thinking―"
"Get over yourself," Sirius snapped. "It needs to be done. You want it to be
done; we want it to be done. The only thing standing in our way is your fear of taking the
first bite—literally. You won't hurt her."