The Andy Griffith Show S06 E17 The Return of Barney Fife

"Nip it in the bud!"

Barney Fife returns home to Mayberry for a brief visit only to discover that his former girlfriend Thelma Lou has married. Fortunately for Barney, sweet Nettie Albright a secret admirer from days gone by shows up at Barney's high school reunion dance to save the day.