[bbfan1991]

Three business students have begun a service offering sex with the promise of better grades.

Oskar, Christopher and Julius from Mannheim, Germany, claimed that students are too stressed out to relax during exam time and that they can offer the "physical exertion" needed to improve grades, according to magazine Der Spiegel.

They advertised the 'Bib:Love' service - named after the start of 'bibliothek', the German for 'library' - around the university.

As a result, they have received more than 80 emails expressing interest in the service. The trio have met nine women, five of whom have gone on to have one-night stands with them.

The trio said that 'Bib:Love' is targeted at young students who spend too much time in the library.

"We are particularly aiming at female students because women usually come off badly from one-night stands," Christopher said.

Oskar added: "Girls who just want a bit of fun are often called slags."