Written and first recorded by Bobby Day (US #41 1958).
Also recorded by Thurston Harris (US #96 1958).
Other hit version by The Dave Clark Five (US#1/UK #45 1965).
From the wiki: “‘Over and Over’ was written by Robert James Byrd and recorded by him using the stage name ‘Bobby Day’. Day’s version (as the B-side to ‘Rockin’ Robin’) entered the Billboard Top 100 in 1958, the same week a version of the same song by Thurston Harris (‘Little Bitty Pretty One‘) entered the chart. Day’s version reached #41. Harris’ recording peaked at #96. In 1965, the most successful version of ‘Over and Over’ was recorded by The Dave Clark Five (‘Do You Love Me‘, ‘I Like It Like That‘). In the US, ‘Over and Over’ was the group’s 12th Top 40 hit and became their sole US #1 hit.”