BBC Chinese, Mar 8, 2011.
http://www.bbc.co.uk/ukchina/simp/uk_life/2011/03/110309_life_3year_glitch.shtml
, which is translated from
The 7-year itch is now the 3-year glitch. Reuters, Mar 8, 2011.
http://news.yahoo.com/s/nm/20110308/lf_nm_life/us_couples_survey
Note: BBC English does not have a corresponding report.