Don't place your bets on Glen Powell and Olivia Jade Giannulli becoming Hollywood's hot new couple. "They are close friends and are not dating," a source close to Giannulli, 25, exclusively shared with Us Weekly on Monday, September 8. "They have been friends for several years." According to the insider, the two stars met due to their individual connections to the hit show Full House, and have simply become good friends since.