Sensing the movement from Kati off to the side, he smiled as he gave Amelia a teasing lick along the edges of her lips before turning to look at the other girl once more, holding a hand out for her to come join them again.  "My back feels awfully...bare...if you'd care to cover it for me."  He winked as his fingertips traced her skin slowly, up to her chin where they trailed away teasingly, beckoning her to move closer to them however she saw fit.