The scooby gang had found out about the two of you. Apparently one of Buffys friends had asked about the "mysterious guy" that you'd been seeing, and upon further investigation, they had put all of their five braincells together to figure out it was him. Not that he'd really cared, he wasn't the one that wanted to keep your relationship secret, but he respects you, which means keeping quiet.
Well, now he's standing with you, an arm around your waist for comfort, as you try to handle your friends. They (mainly Buffy) are not happy with this situation, she just cannot seem to comprehend the fact that he can love. It's insulting, really, he's tried really hard with you, but she wont give him the time of day to speak. It's been thirty minutes of this bs.
"Listen, Prom Queen, we know you're angry. Is there any new information you can bring to the table or are you just going to continue yelling in hopes that I'll care?"
And with that she stormed out, her little group of friends following behind. Immediately he shut the door behind them and pulled you into his arms. "Why did your neighbor have to say anything to her?"