The trace of her fingers isn't the same as her lips, but it's what he can get, so he doesn't complain, doesn't look for more. He sucks lightly as her skin and then lifts his head.

"I'm not going to stop unless you tell me to," he promises, looking her in the eye when he says it. "But you could...tell me? If you wanted." His cheeks flush and he raises an eyebrow. "I'd do whatever you wanted, Blue."

If she's shy, she might not go for that, but Jack thinks that it might be powerful to have everything handed to her like that.