Lea Michele
truly loved Cory Monteith.

In the August issue of Mexico's Marie Claire (via Pop Sugar), the "Glee" star opened up about her on and off-screen romance with her late boyfriend.

Lea gave the interview just one month before Monteith passed away from the deadly combination of heroin and alcohol on July 13, in Canada.

Opening up about her relationship with the actor, Lea couldn't stop gushing.

"It's more interesting having a relationship with someone you work with because we get more attention because we play boyfriend and girlfriend on the show and we are also in real life," she says.

"But he is the best person I know, he has made my life so incredible, and I am so thankful for him and not only to have him as a partner but also as a co-worker," Lea adds.

Michele also shares how Monteith always provided her with support, "It is important to have someone that supports you and encourages you, someone that makes you feel that you are unstoppable, that you can do anything in the world because you have him," she confesses.

Cory was so supportive of the 26-year-old's career, he was even on hand for Lea's shoot and interview with the mag.

Marie Claire Mexico editor in cheif, Ariadne Grant, said the actor "showed up in great spirits"  -- and added that the couple was "very nice and obviously happy and in love."

Our thoughts are with Lea during this tough time.

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