"I think," David Cassidy sang 48 years ago," "I love you."
Therefore, he was.
The reigning teen idol's young fans in 1970 didn't just think they loved him too, they knew it from the bottom of their bubble-gum hearts.
"I Think I Love You" was released as a single the month before "The Partridge Family" made its debut on ABC in September 1970 and topped the charts for three weeks, starting a few days before Thanksgiving and eventually outselling the Beatles' "Let It Be."
The song, which was played only twice during the show's first season, proved to be the fictional band's only No. 1 hit, though they did notch four more Top 20 singles, including "Doesn't Somebody Want to Be Wanted" and "I Woke Up In Love This Morning."