This was Doris Troy’s only hit, reaching No 10 in the US in 1963. She co-wrote it using her earlier stage name, Payne.
https://www.youtube.com/watch?v=tM_nfDPgcuI
In April 1964 The Hollies took the song to No 2 in Britain, and made it into the US chart for the first time at 98.