Other of Knight’s friends, who had been with him on Wednesday night, told TMZ he had taken "some pills" but did not know what kind.
The sources also said Ryan appeared in a good mood, saying he was dating someone new who made him extremely happy.
According to HollywoodLife.com, that person is Makenzie Jauer, who left a heartbreaking message on her Instagram in the wake of the tragic news.
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
This is the second death in the MTV reality TV world in recent weeks. Fellow MTV star Diem Brown died earlier this month at the age of 34 after a long battle with cancer.