(Cross-posted, with apologies.)
Oh boy.
Pretend you are a clerk in a bookstore. I am your worst nightmare: I’m looking for a book, but I don’t know the title or the author or really anything except that the main character wore pink pants in one scene…
Stop pretending to be a clerk in a bookstore. Seriously, stop! I’d rather you didn’t kill me.
So, I’m looking for this book. It is a young adult romance novel (no, really). The main character, who does indeed wear pink pants in one scene, is a good girl with good grades who starts dating a boy (I think his name might be Bobby) with a bad reputation – he’s had sex, he maybe can’t read, etc. They become very close and she learns that he dreams of being an actor; in one scene he reads to her from Long Day’s Journey Into Night. His father is a police officer, he is Italian, and he cooks her dinner. There is a very important scene in which she is nearly hit by a car.
Does anyone have ANY IDEA AT ALL what book I am talking about?

I’ll ask Mummy.
No, really. She was a middle school librarian for 25 years. She knows this stuff.
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Mummy doesn’t know the book, but suggested Lurilene McDaniel as a possible author. She – Ms. McDaniel, not Mummy – has written many young adult novels.
Or you could try searching the text of books at amazon for “pink pants.” That’s my suggestion. Not Mummy’s.
I have no idea but when I was in search of a book that I couldn’t remember much about I found it by posting on alibris.
I don’t know the answer, but I have a suggestion. Tomatonation.com has a section called the Vine. People write with questions on relationships, families, etc. A portion of the questions are about identifying books from youth, and she has the readers help out with those. The readers are REALLY good at figuring this stuff out. Maybe you could write in?