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Maci added that she's "talked to [Ryan] about going to a treatment center" and that her ex "would do it." However, she claims that "it's everyone else around him that is too afraid to admit it."

While she fought back tears, the reality star told her co-stars, "What I'm saying is that everyone else around him is too afraid of what it will look like more than his health…it's all denial. They all know."

Ryan and Maci welcomed their son Bentley eight years ago. Their struggles co-parenting have been widely documented throughout the course of Teen Mom.

Maci also added it's hard watching her son's father hurt himself.

"Honestly, the hardest thing is for me to see Ryan not love himself because he is a person worth loving. He deserves to love himself," said Maci.

Ryan has not commented about the substance abuse issues.