The falling out occurred due to a simple misunderstanding; years prior, Taylor-Taylor declined to take a phone call from Mark while he was in the middle of a serious discussion with an ex-girlfriend.
Mark assumed Taylor-Taylor was angry with him and stopped initiating contact for nearly a decade. Dandy Warhols - We Used To Be Friends
The song was written by frontman Courtney Taylor-Taylor and was inspired by a real-life rift with a long-time friend named Mark. The falling out occurred due to a simple