Ok, thanks for your nice reviews. Some of you were right: the third chapter was about Arthur and Molly. :-) I simply love the Weasleys.
Disclaimer: Well, I am not related to J.K.Rowlings and I am not her, so I own nothing, but my own ideas.
As this chapter is going to be the last of the declarations of love, I will post the solution after "The End". But don't look at it if you want to guess! Lizzy
He entered the Room of Requirement, immediately noticing his beautiful girlfriend lying on the soft pillows in the middle of the room, her smooth red hair spread around her head.
She saw the smirk on his face and sat up at once.
"Sirius again?" she asked and he nodded, sitting down on the cushions next to her.
"Who was it this time and where?"
Her brilliant green eyes looked directly into his hazel eyes. He ran one hand through his messy black hair and rearranged the glasses on his nose.
"Professor L'Azy found him and Clare McLoo kissing in his office."
"What's their punishment?" she asked, a smile around her lips.
"Well, we speak about L'Azy, which means that the punishment was a conversation about flowers and bees."
She started to laugh loudly, which sounded wonderful to him.
He took her face into his hands and looked into her green eyes.
"You are amazing." He took a deep breath. "And I love you."
They kissed each other passionately and the world around them – together with bees and flowers – was forgotten.
The End
So, here's the answer to this last riddle: this chapter is about Lily & James.