The invitation was one Sam took eagerly. His tongue dipped into Sasuke's mouth to explore, to muffle whatever noises either of them made. He was just far gone enough to not give a second thought to how Sasuke was disrobing and exposing so much more to touch and explore. Sam's nails bluntly raked up his back, pressing him closer and lowered his head to kiss down and over his neck again and down his shoulders. After a few teasing presses of his lips, he sunk his teeth in at Sasuke's shoulder, hard enough for him to feel, but not near hard enough to actually hurt.