He's not stupid, he keeps it on

Immediately Galhalf was suspicious. His eyes narrow, "Why?" he regarded Xaurian with a frown.

"It's something you'd like to know," Xaurian whispers coyly, "but Aaralon would prefer I keep it a secret."

Galhalf remained suspicious but from his vantage point inside the closet, peeking through the tiny crack between the doors, Aaralon could see the silver haired wizard was interested.

His rival spoke again the apparently human girl, "If you want to ditch that looser and hook up with me... you'd better spill the beans. I'll make it worth your while. Promise." And as Galhalf tried to bait Xaurian into giving away the secret he gently stroked her arm with his slender fingers.

Xaurian, the succubus in disguise, pretended to consider Galhalf's offer, pretended to resist, pretended to succumb to his touch. "You see," she whispered, "We were going to play at summoning demons. I want the knowledge. I had told Aaralon we could summon a tentacled frog demon and let it fuck me. He wanted to watch. That's his weakness you see. He likes to watch."

There was a pink blush to Xaurian's cheeks, as if the succubus was admitting to some hidden fantasy, and from his vantage point he could see that Galhalf was beginning to buy the story. Perhaps he wanted to buy the story.

Xaurian mutters, "So... if you take the amulet off, perhaps when Aaralon arrives we can tell him that I need you involved too. I need Aaralon to guide the spell but I need you for... ahem... I need you for the sex rite."