They had a child named Ava Archer Syme-Reeves.
Keanu and Jennifer had a daughter together who was stillborn. The pair splits a few weeks after her death, but remained good friends afterwards. Jennifer died in a car accident in 2001.
Not much is known about Jennifer Syme, except that she was a girlfriend of actor Keanu Reeves. A lot of what is known about her centered around tragic circumstances: First, the 1999 stillbirth of the baby she expected with Reeves, and second, her untimely death at age 28. Around the time she met Reeves, Jennifer worked as an assistant to director David Lynch, and was even featured briefly in his film Lost Highway (1997). She and Reeves started dating casually in 1998, and were expecting a baby girl in 1999. Sadly, Ava Archer Syme Reeves was stillborn around Christmas 1999. The couple separated permanently not long after the baby's death, but were said to have remained good friends. At the time of her death, Jennifer was working as a record company executive in Los Angeles. She died April 2 at 6:20am, after her Jeep Cherokee crashed into a row of parked cars in Los Angeles. In tribute to his former assistant, David Lynch dedicates Mulholland Drive (2001) to her in the closing credits of the film.