First recorded by The Elgins (US #50/R&B #9 1966 |UK #3 1971).
Other hit version by Bonnie Pointer (US #11 1979).
From the wiki: “The version by the Elgins, released on the Motown subsidiary V.I.P. Records label in 1966, reached #9 on the Billboard R&B chart and #50 on the US Billboard Hot 100. It was reissued in the UK in 1971, and reached #3 on the UK Singles Chart. The Elgins’ backing vocals were augmented by The Andantes.