Oh, those are some delightful reactions from Ianto, and he smirks every time Ianto winces or sucks in a quick breath.
"Me? Enjoying it?" he echoes, his face the picture of innocence as he straightens up after missing an easy pot for the sole purpose of leaving Ianto an irresistible shot into the corner - but one which he'll have to stretch down the whole length of the table to reach.