Lean on me!

As Randy Newman said...You've got troubles, I've got 'em too. There isn't anything I wouldn't do for you. We'll stick together to see it through cause you've got a friend in me

John Lennon also said I get by with a little help from my friends

Simon and Garfunkel sang If you need a friend, I'm sailing right behind

Queen claimed When you're through with life and all hope is lost, hold out your hand cos friends will be friends right till the end