I'm going to recommend a book by one of my favourite authors, Bret Easton Ellis. I'm currently reading his second novel, Rules of Attraction. Published in 1987.
It was made into a film in 2002.
The blurb is as follows:
Incisive, controversial and startlingly funny, The Rules of Attraction examines a group of affluent students at a small, self-consciously bohemian, liberal-arts college on America’s East Coast.
Lauren, who changes the man in her bed even more often than she changes course, is dating Victor but sleeping with Sean. Sean – cool, ambivalent and deeply cynical – might be in love with Lauren, but he’s not going to let that stop him from bedding Paul. Paul, as shrewd as he is passionate, is Lauren’s ex-lover and the final point in this curious triangle. This is a breathtaking tale of sex, expectation, desire and frustration.
‘A tour of the heart of darkness, a moral armageddon’ The Times
‘Compelling . . . sympathetic to his “lost generation” the way only Fitzgerald was about his’Vanity Fair
‘One of the primary inside sources in upper-middle-class America’s continuing investigation of what has happened to its children’ New York Times
‘Inspired. A wonderfully comic novel’ Gore Vidal