Sally Wang has a theory as to why she did not date many Asian men before meeting Jason Liang in February 2015.

“I was a part of the so-called ‘1.5 Generation,’” said Ms. Wang, who was 7 when she and her parents arrived in New York from Nanjing, China.

“I was considered too Chinese for Chinese men who were born in the United States, who saw me as being fresh off the boat, and I wasn’t Chinese enough for traditional Chinese men who were born in China. I was never fully accepted by either group.”