You (can) bet your (sweet) life phrase
You can be absolutely certain that something is true or will occur.
You can bet your life that he is a liar.
You can bet your life that she will be the next chosen applicant.
You can bet your life that he won’t dare to express his love to her.
Meaning absolutely certain or without a doubt
Another way to say "absolutely", "definitely" or "for sure"
That's absolutely right.
Totally certain.
With absolute certainty; decisively
people often do irrational or foolish things when they are in love.
I and my boyfriend have decided to get married in the summer. I don't think that's wise, since we won't have enough money saved by then to set up house. But then, one cannot love and be wise.