Billionaire remarries his ex-wife

She and he signed a one-month marriage contract. Then get a divorce. But a month later, on the day she was about to leave. He was drunk and had an affair with her.
She left according to the terms of the contract. No wonder three months later. She found out she was pregnant again.
During the most difficult times. She met a very nice man. He and she love each other.
Five years later. When all of her went into orbit. She meets him again, her ex-husband "one month".
How should she face him? Did she tell him she had a baby with him? What about her current lover?​