Zhou Xiaopeng, a consultant at one of China's top three dating agencies, Baihe.com, talks to the BBC about marriage, love and dating in today's China.

BBC: Q&A: Chinese dating consultant Zhou Xiaopeng

Any seeming nostalgia for a time when dating, courtship, matchmaking, marriage, and family formation was more scripted actually masks a deep sense of regret over how indeterminate the millennial cohort seems to be on the most personal, individual level.

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But some sociologists, such as Millsom Henry-Waring of the University of Melbourne, have given warning that electronic forms of communication in general and digital-dating services in particular are gradually changing society's conception of relationships and marriage for the worse by encouraging people to view partners as commodities that can simply be traded in for better versions at the click of a computer mouse.

ECONOMIST: Online dating

Today, options are so limitless that many (privileged) young people try to avoid making these decisions entirely staying in school longer, job hopping, dating around, pushing the average age of first marriage and child higher and higher.

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While it's unclear when Tsarnaev and Russell began dating, the couple married on June 21, 2010, according to marriage records at the Cambridge City Hall.

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