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Ryan Knight of MTV's "Real World" dies

Ryan Knight/Twitter

Ryan Knight, who appeared on MTV's "The Real World: New Orleans" in 2010 and "The Challenge" in 2013 died at the age of 28. The network announced on Thursday, "The Real World family has lost another member."

It was the second death of a "Challenge" cast member in November.

Knight's girlfriend, Makenzie Jauer, then shared this heartbreaking post on Instagram, calling Ryan her "sweet angel."

I love you Ryan Knight. I am heartbroken, confused, hurt and most of all mad. The pain I am feeling now will never go away. You mean more to me than you will ever know & I never thought that I would spend a day without you. Every second with you was full of love and laughter. You were the brightest light in every room. You taught me not to care about what other people think and you made me understand that being myself was okay. Thank you for being inappropriate at the worst of times and making me laugh until I cried. Thank you for loving me unconditionally even though I snored and drooled on you in my sleep. You had the sweetest soul and I will never forget that. I always called you "my sweet angel" and now you truly are. Love you forever, MEK

A photo posted by ❤️💲🎉 TX/LA (@makenzie_jauer) on

Knight's reality TV co-stars also responded to the news of his death on Twitter Thursday:

Recently, Knight posted a picture with fellow "Challenge" cast member Diem Brown who died on Nov. 14 after battling cancer.

On Nov. 24, he wrote, "Have the type of life, that when you die no one will dare say, 'he left us for a better place.'"