Merlin blinked as though he was surprised to see Zach in his own house. He smiled to see the boy though, a smile that he didn't have to think about at all before it was there which was something that didn't happen often with him.
He startled a little at the kiss and he would have denied it if anyone had pointed out the way his fingers twitched to reach up and feel if it had actually happened.
"Thank you." he said softly, his tone still a little guarded. He held out a dark bottle that he'd kept in one of his jacket pockets, one that had been spelled to be larger on the inside. "I brought this." he offered, just a nice bottle of red.