Mr. Grumpy's Runaway Wife

"Fuck!" Sebastian muttered, "The condom broke,"
Still recovering from the mind shattering orgasm I grabbed his face and kissed him. "Don't stop, I can't have kids anyway."
Mia Anderson felt her life crumbling when she received a notification that Gavin Campbell, her husband, was going to be a father of another woman's child.
After an intense confrontation, Mia was left to confront the painful reality of their shattered marriage. Despite the pain and anger that flowed through her veins, Mia kept it to herself and decided to take control of her future. She reignited her passion for fashion consulting and found solace in the support of one of her clients, Sophia Coleman.
At Sophia’s wedding, Mia encountered Sebastian Thornton, leading to an unexpected passionate night. Even though the condom accidentally broke during their one night stand, Mia wasn't worried- after all, one of the reasons she divorced her husband was that she couldn't get pregnant.
However, weeks later Mia shockingly discovered that she was pregnant, leaving her in a tumultuous storm of emotions and hard decisions.
As for Sebastian, the billionaire bachelor who never expected to be a father at his current age. While after a steamy night with Mia, he suddenly received a letter demanded that he renounce any parental rights to Mia Anderson's unborn child.
What the hell is going on?