1.be meant to be
This is love that's meant to be.
We are meant to be together.
You are meant to be looking after me.
2.be destined for sth / be destined to do sth
The kids are destined for great things.
I am destined to be rich.
I am not destined to be alone.
3.be doomed to do （指注定要失利或消灭）
You're doomed to repeat it again.