Here’s a song about fair-weather friends from country musician Johnny Cash:

Fair Weather Friends
Performed by Johny Cash

Fair-weather friends, fair-weather sailors
Will leave you stranded on life’s shore
But one true friend who really loves you
Is worth the pain your heart endures

You never know which way the wind will blow
Nor when and where the next turmoil will be
But he’s a solid rock when troubles flow
And he holds out a saving hand for me

Fair-weather friends, fair-weather sailors
Will leave you stranded on life’s shore
But one true friend who really loves you
Is worth the pain your heart endures

He’ll be your shelter in the night
He’ll be an anchor in the storm
When you can’t find your way, he’ll be your light
In the chilly wind of doubt he’ll keep you warm

Fair-weather friends, fair-weather sailors
Will leave you stranded on life’s shore
But one true friend who really loves you
Is worth the pain your heart endures

Fair-weather friends, fair-weather sailors
Will leave you stranded on life’s shore
But one true friend who really loves you
Is worth the pain your heart endures