that's when your heartaches begin - million dollar quartet lyrics

if you find your sweetheart
in the arms of a friend
that’s when your heartaches begin
when dreams of a lifetime
must come to an end
that’s when your heartaches begin

love is a thing you never can share
if you bring a friend into your love affair
that’s the end of your sweetheart
that’s the end of your friend
that’s when your heartaches begin