Thomas would be sad that he couldn't see Jack like that and enjoying himself. He would have loved to see Jack like that but he was preoccupied.

Underwater he took Jack's cock into his mouth. The vague thought of mext time no bubbles so Jack could watch him might make things different. Though not be long able to be seen...

Thomas could do things to surprise Jack. But for then he was just swirling his tongue along Jack's cock.