There is more than one group with this name:

1) Love Affair were a London based Pop, Soul and R&B group formed in 1966. They had several UK Singles Chart top 10 hits including number one hit «Everlasting Love».

2) Love Affair were a Cleveland, Ohio based rock act who released their debut album in 1980. The self‑titled album featured the regional hit single «Mama Sez.»