Written by “Mutt” Lange and first recorded (as “We Both Believe in Love”) by Supercharge (1979).
Hit version by Huey Lewis & The News (US #7/UK #9 1982).
From the wiki: “‘We Both Believe in Love’ was written by Robert John ‘Mutt’ Lange but underwent a title change while being considered for recording by Huey Lewis and his band. The original, unrevised version was first recorded in 1979 by British band Supercharge, on which Lange sang lead vocals, and appeared on the 1979 Supercharge album Body Rhythm.
“Supercharge were a 1970s English rock band from Liverpool. The band had a #3 hit in Australia in 1977 with ‘You’ve Gotta Get Up and Dance’. Live UK gigs by Supercharge often featured celebrated live sound engineer Chrys Lindop, and included the infamous comedy track ‘She Moved The Dishes First’ (see below), which the band claims they wrote so they could mess about a bit while replacing broken guitar strings during live gigs. This track also achieved notoriety when it was picked up and played regularly by the North Sea pirate radio station ‘Radio Caroline’.
“‘Mutt’ Lange is a Zambian-born British record producer and songwriter, most noted for his production work on recordings by AC/DC, City Boy, Def Leppard, The Boomtown Rats, Graham Parker and the Rumour, Outlaws, Foreigner, The Cars, Bryan Adams, Billy Ocean, Savoy Brown, The Corrs, Maroon 5 and Nickelback. Lange also wrote and produced songs with Canadian country singer and his ex-wife Shania Twain.
“The video accompanying the Huey Lewis & The News release in 1982 received heavy airplay on MTV in its first full, formative year, contributing to the breakthrough popularity of both the song and the band.”
Huey Lewis & The News, “Do You Believe in Love” (1982):
Bonus video
Supercharge, “She Moved the Dishes First” (NSFW!) as broadcast on Radio Caroline 1979: