This "innocent" sounding song has a bit of a deeper meaning. The line: "...Tonight, tonight We're gonna go From the A, B, C's Through the X, Y, Z's Of love..." means "going all the way," as teens in the late 50s (as well as today) often did. I just hope the ones in the song used proper protections to protect the naive girl from her man's potent seed...
Many naive Christian girls have been shocked to discover surprise pregnancies after they conceived from their nonchristian boyfriends' potent sperms. They thought they were "protected" or okay because the guy didn't stay in "very long" or didn't cum in their sweet Christian p*ssies, which sooo wanted them inside them...