Everyone laughed at him when he married her, 6 years later she shows her metamorphosis

18. Did I really say “I do”?

The women in the picture above just got married, but it looks like she’s already having her doubts. Her husband seems to be trying to calm her down, but the bride in question isn’t having it. Why did she get married if she’s having doubts right after saying “I do”? Or did something happen during the wedding, perhaps?