Historical clue formulations

• Partner in a picture — 2024-05-11
• Someone to split the bill with — 2022-10-22
• Billing partner — 2020-05-08
• One not acting alone — 2017-06-04
• Bill splitter? — 2013-01-25
• Spotlight sharer — 2010-07-11
• Bill sharer — 2009-05-22
• Lead splitter — 2005-03-12
• Lead sharer — 2000-04-02
• One with equal billing — 1998-09-16
• Diane Keaton, to Woody Allen, often — 1997-12-23
• Tracy to Hepburn, often — 1997-02-28
• Share top billing — 1996-05-30
• Share the marquee — 1995-04-30
• Crosby to Hope, often — 1994-02-17