He sees more than he means to, but much less than he could, fleeing the room the moment she starts to undress. Mostly all he gets is the blurred impression that she's not merely pale-faced and that she does have other tattoos. That's enough to set him blushing, but at least she doesn't see it.

"In here, dear!" Tara calls shortly after Harley has left the bathroom, because her feline hearing is superior to Gale's. 

By the time she's finished, at least Gale has had time to properly dress in a simple but well made top and trousers. He's brushed his hair and combed his beard and feels a lot more publicly presentable. Harley finds them in what must be a study, judging by the desk. There are so many books and scrolls, more densely packed than through the rest of the house. There is other magical detritus around the room like crystals, tools, and a small statue of Mystra. There are also display cabinets, conspicuously empty.

"I am not... not... and anyway, I just haven't had time to take care of it," he protests.