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Reuters - The "three-year glitch" has replaced the "seven-year itch" as the tipping point where couples start to take each other for granted, according to a new survey.<br style="clear: both;" /><p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="The 7-year itch is now the 3-year glitch   (Reuters)" href="http://us.rd.yahoo.com/dailynews/rss/oddlyenough/*http%3A//news.yahoo.com/s/nm/20110308/od_nm/us_relationships_itch_odd" target="_blank">http://us.rd.yahoo.com/dailynews/rss/oddlyenough/*http%3A//news.yahoo.com/s/nm/20110308/od_nm/us_relationships_itch_odd</a></p>