One of the faithful classics in the bluegrass cannon. How Mountain Gals Can Love has that "Mountain Sound" the Stanley Brothers made so popular.
People tend to arrange it the way the original recordings did by playing an instrument melody of the verse and then going directly to the four chord and singing chorus - verse - chorus. The instruments can then play another verse and chorus. Don't ask me why. It's just the way it is and people thrill to the sound.
Sing. Sing along. Sing in harmony. Sing during the solo part to get the hang of doing it alone. What ever you do . . . Sing!