Does the phrase “and to think” have the same meaning with “in addition”? What’s the difference between them?

Native speaker’s answer
Rebecca
"And to think" actually means that something is really surprising or shocking to have happened. In this scenario, Grizzly expresses his surprise that he met this girl because of his brother's allergies. A: Did you hear there was a major accident at the water park? B: No, I didn't! And to think, I was just there yesterday.