Cassie Randolph has not moved on with musician Brighton Reinhardt after her high-profile split from Colton Underwood, contrary to speculation online.“Cassie and I are just friends and have been for over four or so years,” the singer, 23, exclusively tells Us Weekly. “My brothers and I are all close with Cassie and her whole family.”Fans noticed earlier this month that Randolph, 25, and Reinhardt were spending time with her family in Huntington Beach, California.