Agron, who plays cheerleader and young mum Quinn on the hit show, has joined her castmates in paying tribute to the actor, who died from an accidental drug overdose in Vancouver, Canada on Saturday (13Ju13).
The actress released a statement on Wednesday (17Jul13), which read: "I have never lost a friend. In this difficult time, I am leaning on all of the wonderful memories we shared with Cory, how many ways he was able to make us smile."
She added, "Glee was a gift to all of us. It gave us a family in this industry. We really cut our teeth and grew up on this show. In playing underdogs, we learned that we had dug into the hearts of our viewers and that we could stay there. Cory is so deserving of that place in everyone's hearts.
"He was one of the most generous and kind people that I have ever met. He had a smart, curious mind, he was an enormous talent. He was loving to not only me but my family."
And in remembering her former Glee love interest, Agron also reached out to her Tv love rival Lea Michele, who was also Monteith's real-life girlfriend.
She states, "My heart goes out to his family, to Lea, to everyone that is struggling with the loss of our friend. We will miss you Cory. We will always carry a piece of you with us."
Reports suggest Monteith's remains were cremated on Tuesday (16Jul13) during a very private family memorial, which Michele attended.