Love was in the air for many of our favorite couples in 2011. There were many relationships to celebrate, both new and old. Jennifer Aniston and Justin Theroux basked in their months-long romance while Prince William and Kate Middleton made it official after years of dating. With all of these celebs feeling the love, tell us ? what was your favorite PDA moment?

Also, don't miss all our Best of 2011 coverage across the PopSugar Network!