Dave Grohl underwent '70 weeks of therapy' after lovechild scandal Foo Fighters frontman Dave Grohl has revealed he underwent "70 weeks of therapy" following his revelation he had fathered a child outside of his marriage - confessing "there were so many things that l 20 March 2026 Foo Fighters frontman Dave Grohl underwent "70 weeks of therapy" after confessing he had fathered a child outside of his marriage.