Cape Town - South African silver medallist Caster Semenya is reportedly set to marry girlfriend and fellow athlete Violet Raseboya.According to the website , the 23-year-old Semenya has sent her parents to Raseboya's family in Polokwane to negotiate lobola - a traditional Southern African custom whereby the family of the fiancé is paid for her hand in marriage.An insider revealed that both families were happy to negotiate lobola, with Semenya's family paying R25 000.Semenya first shot to stardom in 2009 when she won gold in the women's 800m at the World Championships in Berlin, before being controversially subjected to gender testing.She won a silver medal in the 800m at the 2012 London Olympics.Preparations for the wedding are reportedly underway.