Sam's own history meant he knew about things that not many wizards were privy to. Which is why he found himself fervently wishing he had been born an elemental, because then he would be able to literally sink into the ground or turn into a puff of wind and disappear, or even becoming a pillar of flame seemed like a reasonable option right now' he was sure his cheeks were quite red enough. To compound matters, Louise didn't seem surprised, and that could only mean that she expected such a reaction. Why couldn't he have said something sensible and mature that made him sound like a sophisticated man of the world...or better still, not touched the d*mned curtain in the first place. At least he managed to resist the impulse to continue stammering out apologies and instead allowed her to speak.
He should probably make an appropriate comment about her businesses being successful, but he couldn't seem to figure out how to form a sentence just then. At least he wasn't blushing any more, though he wished she would stop looking at him quite so intently. It felt as if she was trying to guess his thoughts just by staring at him, and that felt uncomfortable.
"Right. Coffee. Yes..." he agreed, making one or two false starts before persuading his feet which direction they wanted to go in. "Five minutes...okay, maybe ten if they're that good, there might be a queue..." At least he made sense that time, even if it wasn't exactly a thrilling speech. Sam managed a slightly tentative smile as he excused himself and headed for the door. He was fifty yards down the street before realising he hadn't asked which direction the coffee shop was in, and then suddenly he was struck with a sense of panic that he might have come out without any muggle money. Going all the way to Gringotts to change some would take far too long, and he'd look a complete idiot if he had to sidle back to the shop and admit he only had galleons. Reaching into his pocket, the Seer was relieved to find something that felt like a banknote, and even more so when his brain started working enough that he realised he must be going the right way. Logically, if he'd passed a coffee shop before going into the gallery he'd have noticed it, so given that he was walking in the opposite direction now, it must be somewhere around here.
A minute or so further on and he saw the place. At least, he assumed it was the one Louise meant, and he wasn't about to chance his luck any further. Half a dozen tables were occupied, and a couple of people were waiting at the counter. Sam joined the queue, pulling out the note and examining it carefully, remembering belatedly that he should have done this outside the shop. Oh well, maybe they'd assume he was foreign, he decided as he read the 5 and glanced briefly up to make sure that was enough for two cappucinos. Then, of course, he didn't know whether Louise took milk and sugar, so the teenage girl serving gave him a paper bag with some little packets of each with a look that clearly suggested he shouldn't be out in public without a keeper. Then he almost forgot his change, hurriedly stuffing the random little coins into his back pocket and making good his escape.
The gallery came in sight again, and he had a nasty thought that Louise didn't want him to come back, and that he should... what? Just walk past? Never come to this part of London again? Sam felt his heart lurch at the thought; a little embarrassment was preferable to being rude to someone he should never have lost touch with. So with more confidence than he felt, he opened the gallery door once again and carried the coffee cups and little bag over to the table where she had been seated when he had entered the place earlier. "Cappucinos alright? I didn't know if you liked cream and sugar, so the girl gave me some in the bag and... shall I just stop talking now?" he asked with a small laugh.