Without hesitation, Scorpius squeezes a thick, shimmering drop of lube onto Avery's arsehole, then rubs it in, starting on the outside, until the fine nerves make Avery twitch. The perfect time to push a fingertip inside. The intense heat encloses him. Though he'd expected it, it feels strange and he pushes his finger further forward, fascinated, while the lubricant is easing his movements.