While Frankie was playing cards at a friend's house, he met love of his life Kathryn Diebel. He fell in love with her and told his friend Kay that she is the girl whom he will marry. He finally got married to her on 19th of January 1963. As a married couple, they have been parents eight times. They are still together and are leading an example of sweet and lovely married couple.
When Frankie was 11, he made his television debut by playing his trumpet on the TV show, The Jackie Gleason Show. In 1954 he released his two singles titled Trumpet Sorrento and Trumpet Tarantella. He made his acting debut in 1957 and that year he appeared in the movie, Jamboree. His debut album, Frankie Avalon was released in 1958. Next year, he released two albums Swingin' on a Rainbow and The Young Frankie Avalon. His net worth is expected to be in millions.