Based on “Love Is a Wonderful Thing” written and first recorded by The Isley Brothers (US #106 1964).
Hit version by Michael Bolton (US #4/MOR #1/UK #23/CAN #2/NZ #12 1991).
From the wiki: “In 1964, the Isley Brothers recorded a song titled ‘Love Is a Wonderful Thing’. Not included on an Isley Brothers album until years later, the song was first released as a single in 1966 with minimal chart impact.
“Michael Bolton’s song, ‘Love Is a Wonderful Thing’, was found to contain similarities to the Isleys’ song that exceeded the title. In 1994, a jury found songwriters Bolton and Andrew Goldmark liable for copyright infringement due to multiple similarities between the two songs. The pair were ordered to pay the Isleys all profits earned from the Bolton single plus 28% of the album profits.”
Michael Bolton, “Love is a Wonderful Thing” (1991):