Elon Musk says he was never romantically involved with Google co-founder Sergey Brin's estranged wife Nicole Shanahan. The Wall Street Journal reported on Sunday that the 51-year-old Tesla mogul was involved in a "brief affair" with Shanahan last fall. Elon took to Twitter to debunk the outlet. "This is total bs. Sergey and I are friends and were at a party together last night! I've only seen Nicole twice in three years, both times with many other people around. Nothing romantic," he said.