Galahad may not be outwardly expressing the concept of 'loving it' as much as, say, Dionysus would. But Dionysus has been around long enough, he's known enough people, to know that sometimes people are just reserved like that, so he's able to take Galahad's words as the truth.

He breathes a sigh of relief and smiles. "I'm glad! I know I'm not the world's greatest artist or anything, so I'm glad you like it. Whenever you're ready to wash it off it should come off with soap and water." he pauses. "The glitter might be stubborn. It tends to stick around."