In the late 1990s, Post was in a relationship with Foo Fighters's leader and former Nirvana drummer Dave Grohl. Grohl has said that the Foo Fighters song "Everlong" (on which Post sang backing vocals, recorded over a telephone line from Chicago to Los Angeles) is about Post. Following their break-up, Post, during an inebriated performance in Melbourne in 1997, stated that Grohl had cheated on her with Winona Ryder; this was later believed to be referenced in Veruca Salt's song "Disconnected", which contains the lyrics: "It's kind of scary when your lover leaves you for a movie star". In 2006, Post stated: "It was a private relationship, but it got so much publicity. I didn't mean for it to happen. I'm friends with him now."