Jack moved faster and harder moaning into Ianto's mouth as they fucked. In the back of his lust addled mind he wondered if the scientists watching them were enjoying the show or not.
His body slid against Ianto's like a dream and sparks of gold flared up between them, It had never been like his for Jack either, not even with John did he fully give in the need and the heat. But with Ianto he felt safe, felt as though he could let go and his lover would be there to catch him if he fell.
He leaned down and mirrored the Welshman's earlier actions by sinking his teeth into Ianto's shoulder. "Mine," he growled, "my mate forever."