You were a vampire. You never told anyone, much less your friends. After all, Buffy and the others were vampire slayers... Especially Giles wasn't fond of them, after what happened with him and Angel. He loved you though... He loved you, with all his heart. And it hurt him terribly when he found out...

Giles was in the library, overthinking and in complete shock, disbelief. You had been acting weird lately, and all signs lead to the same result. You were a vampire. He couldn't understand it. Firstly, why wouldn't you tell them? Secondly, how could you go out at day? And thirdly, why hadn't you hurt anyone before? He was out of his mind. He didn't wanna kill you, but in the end, he knew he had to...