Flexible?

Someone told me ...

I got to be more flexible. coz human kind born to be flexible.

We shall not expect to win hence no heartache if we lost.

And I wonder ...

If i can apply this into a relationship.

One shall expect their another half will one day break up with him/her.

Hence no tears?

Crap.

Thou once a while I hope I am thinking that way.

Love ain't forever.

Isn't so?