Key Takeaways Bumble cut its full-year outlook as customers spent less to use the online dating service. Second-quarter revenue fell short of estimates. Shares of Bumble sank to a record low. Shares of Bumble (BMBL) tumbled to their all-time low Thursday after the online dating service slashed its guidance as customers spent less on it. The company that operates the eponymous app now expects full-year revenue to rise 1% to 2% year-over-year, compared with its earlier forecast of 8% to 11%, and app revenue t ...