Jace made a low little keen of sound when Alec grabbed his hair. It felt good, and he was a strong believer in positive reinforcement these days. So he rewarded Alec by opening his mouth, and sucking the head of Alec's cock between his lips, even as his hand splayed over Alec's stomach. He looked up at Alec from beneath his lashes, mismatched eyes hot on Alec's face, and moved his mouth further down, sucking lightly.