Elon Musk, Grimes suffered extreme ?ups and downs? during pregnancy. Photo: Vulture Elon Musk and Grimes are considered a rather unconventional couple by the international media; however that is not to say their relationship woes are any different from the rest of the population. According to a source by Us Weekly, Elon and Grimes?s relationship took a dramatic dive for the worst while she was pregnant with their baby, ?Elon and Grimes have experienced a lot of ups and downs in their relationship throughout Grimes?s pregnancy and have been on and off,? the source revealed.