GIRLBAND singer famed across the continent was dramatically put on trial for GBH yesterday - for giving a lover HIV. Top pop star Nadja Benaissa, 28 - whose group is Germany's equivalent of Girls Aloud - admitted failing to tell a string of men she bedded that she had the virus. The chart beauty - accused of deliberately putting them at risk - faces up to ten years in jail if convicted in a trial that yesterday gripped Germany. She told a judge: "I'm sorry from the bottom of my heart." Benaissa, one of the country's most famous personalities, was...