As 2011 winds down, we're taking a look back at the relationship-related news, trends and research that emerged over the course of the year. (Tech-enhanced flirting! A royal wedding! Elderly roommates!) Should old acquaintance be forgot, at least you'll remember these fun facts!
See the photo gallery on MSN's Glo: The Way We Loved: Biggest Relationship Trends Of 2011
More from Glo: