Originally called Tell Her, this was written by Bert Berns, who also wrote Twist and Shout. The first release was by Johnny Thunder in 1962, but it got nowhere.
Jerry Leiber and Mike Stoller produced a much better Tell Him by the Exciters in 1962. It went to No 4 in America in January 1963.
It got to 46 in the UK but was outsold by the much inferior Billie Davis cover, which reached No 10 here.