Giles did the only thing he could do at times like these.
Pace.
He stopped in front of the two seated individuals, trying his hardest to vocalize what he wanted to say, but was only able to utter out a few vowels. Giles felt another headache coming on just at the thought of the two people in front of him.
"H... how?" Giles stuttered, "you... y... know better. And YOU... he... aa... and ... y... you? He... a... a... boy... older... wrong."
Buffy and Willow stood absolutely still. Arms crossed, glaring at the two people that Giles was trying to give a lecture to.
"Giles," Xander interrupted, "complete sentences please. I don't understand a damn thing that's coming out of your mouth."
Finally, something clicked inside of Giles.
"How could you do such a thing Xander?" Giles asked, "can't you control your own bodily urges? For God's sake, she is your teacher. And you, Ms. Calendar, should know better that to entice an underage student. He's a seventeen year old boy. You are older than he is by at least ten years, and you should know that what you are doing is absolutely wrong."
Jenny looked down in defeat, knowing that Buffy, Giles, and Willow would never understand. She stood up, walking behind Xander, placing her hands on his shoulders.
"You're right. Xander is just a boy," Jenny said, then she looked at the other people in the library with an evil smirk.
"But give him a few years with me," Jenny continued, running a hand down his chest and right into the front of his pants, "and I can turn him into one hell of a man."
Giles, Buffy, and Willow stared wide eyed at what Jenny had just done in front of them.
"And just so that we're clear," Jenny imparted, "whatever Xander and I do is none of your business."
"It is my business," Buffy replied, "cause I don't want to him to get hurt when you decide to leave him for someone better."
Jenny took her hand out of his pants, then walked around Xander, to sit on his lap.
"I'm not into pain," Jenny said as she began rubbing her ass against his quickly hardening cock, "but I am into S&M. I like to be both Dominant and Submissive."
Willow gasped at the sight of Jenny, as the computer science teacher became very intimate with her best friend, in front of them.
"Plus," Jenny continued, "Xander has a raw talent that very few men possess."
Jenny continued rubbing, while slowly picking up speed.
Xander didn't know how long he could take it. He leaned his head forward, until he was resting against her back.
"Our first time together," Jenny explained, "he had me screaming louder and cumming harder than all my ex's could."
Jenny stopped, stood up, and took Xander's hand.
"If you'll excuse us," Jenny said, "Xander and I will be leaving now."
Buffy was fuming as she glared at the retreating backs of Jenny and Xander. She wanted to hurt Jenny, unfortunately she was the Slayer and she knew Giles wouldn't let her, but she really wanted to make an exception just this once.
Willow, not wanting to let Xander see how much he had hurt her, finally broke down crying. Her dreams and wishes about her and Xander becoming an item crumbled to dust and ashes the minute she heard Buffy talking about their secret relationship.