After meeting on the set of Glee in 2009, the costars began dating in early 2012
On May 11, the pair celebrated his 31st birthday at a private club in West Hollywood. "A very happy birthday to the best guy I know Mr. Cory Monteith," Michele tweeted. "Thanks for making me feel like the luckiest girl in the world every day." For his part, he wrote: "Thanks for all the birthday wishes! It was a great day. Officially old now."