Hugh Jackman and Sutton Foster are done hiding their love

As Broadway stars, Hugh Jackman and Sutton Foster must appreciate that their once, not-so-secret, backstage love affair could make for great theater — maybe punctuated by some bittersweet Stephen Sondheim-esque ballads and rousing, Michael Bennett-style dance numbers.

As Foster herself said, she and Jackman developed a close bond, and reportedly more, while married to other people and while they co-starred in a Broadway revival of “The Music Man” from late 2021 to early 2023. Foster, 49...