Dave Young

Dave Young was Anji Kapoor's boyfriend for the five years immediately prior to her becoming a companion of the Doctor.

Biography
Dave was an actor who had never quite broken through to a memorable guest-starring or regular role. A science fiction fan, he was predisposed to accept the life led by the Doctor and Fitz Kreiner when he and Anji met them in Brussels in early February 2001. Ironically, however, he was killed by the first alien invasion he had ever witnessed, and his girlfriend instead went on to join the Doctor.

Their relationship began to sour on New Year's Eve 1999 when he spent the entire night arguing with her that the start of the millennium was not until 1st January 2001. The extreme level of geekiness displayed by this argument made her wonder if their relationship had already slipped into a irremediable ennui. On New Year's Eve 2001, having suffered an entire year of pedantry, boredom and petty fights, Kapoor got Dave to agree to a year of doing unexpected, spontaneous things. One of the first of these was a February 2001 trip to Brussels, Belgium, during which time they met the Doctor and Fitz Kreiner. Although the Doctor promised that he would be able to save Dave from the Kulan attack on Earth, Dave died at their hands. (EDA: Escape Velocity)

After his death, when Anji was traveling onboard the Doctor's TARDIS, she wrote unsent e-mails to him as a way of keeping a sort of diary and maintaining a connection to him. (EDA: EarthWorld).

Significantly later in her travels with the Doctor, Anji began to feel guilty about having gotten used to being without Dave for so long. Awash with nostalgia, she had a clone of him made on a planet far away from Earth. This clone, however, was merely a genetic copy and didn't share the original's history, emotions, or experiences. It was unknown what happened to this version of Dave after she left him to continue travelling in the TARDIS. (EDA: Hope)

Known traits
Dave had a lot in common with Izzy Sinclair. He was a science fiction fan, (EDA: Escape Velocity) and enough of a comics geek to have a particular night —Thursday —routinely set aside for the exploration of his collection. (EDA: Hope)