easy come easy go?

1.
You said it's just that I never loved you more than you did to me,
I let it go easily.

It was never easy, to explain how I appreciate you, until now.

2.
He pocketed the money he saw at the roadside, and used it to treat his friends.

Buying friendships, but with easy money,.... is him still worth befriending?

3.
She listened and offered general advices, but never involved.
It's just as simple as she doesn't want to get hurt, too.

When it comes to people around her, it's complicated who to trust, and who to side.

4.
I look into the colour and say it's grey.
She looked at it and said it's silver.
He thinks that it's a combination of black and white.

There's no certain answer in life, always.