2010, 2011, 2012
You can see the progression of their relationship through her birthday tweets alone.

It seems Cory and Lea were at The Eatery, Cory’s favorite restaurant in Vancouver?
Apparently, this is the twitter of @KerrBearXoxo’s husband, the person who tweeted about meeting Lea.
https://twitter.com/#!/KerrBearXoxo
Kerry Lawrence @KerrBearXoxo
@msleamichele Nice to meet you tonight! Hope you enjoyed your Ichi roll :) have fun in Vancouver!