The subject is sex, candidly

Y.P.F

., whose full title is

Young People F-

, may not win an Oscar but certainly wins the prize for truth-in-titling.

From prelude to coda, this diverting R-rated

Love, Actually

, is a symphony of five couples coupling. The Canadian sex comedy, an erotic buffet, serves up five varieties of the sexual experience and is as explicit about the psychology of sex as it is about physical pleasure.

How the past casts its shadow on the present, how partners negotiate or seize power, how carnal relations tap into deep-seated anxieties, and how an innocuous song can be an aphrodisiac or mood-killer are among the themes the film comically treats.

During its first half, Martin Gero's feature debut focuses on the mental impediments to sexual gratification. The players are: longtime friends, newly separated exes, a couple who are in a sexual rut, another couple who invite a roommate to join them, and a first date between a flirt and a womanizer.

During its second half, which plays the crescendo and de-crescendo of intimacy, the film explores how sex either distances a couple or brings them closer.

The actors are buff, airbrushed specimens of twentyhood who, as is the custom in R-rated fare, have sex while wearing brand-name lingerie and boxers. There is some nudity, of the breast and backside varieties. Like some of the erotic acts it purveys,

Y.P.F.

is pleasant rather than pleasurable.

Directed by Martin Gero. With Aaron Abrams, Carly Pope, Kristin Booth and Josh Dean. Distributed by Copperheart Entertainment.

Running time:

1 hour, 30 mins.

Parent's guide:

R (profanity, nudity, sex)

Playing at:

Prince Music Theater at 2:15 p.m. Saturday.