This is heartbreaking.

Brittany DeJesus — who appeared on the MTV reality series Teen Mom 3 — learned on Wednesday night’s episode of VH1’s Family Therapy With Dr. Jenn that her dad is not her biological father.

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Brittany and [her sister] Briana’s mother, Roxanne, made the chilling revelation during a session and the reality star almost instantly breaks down in tears.

“I’m going to throw up all over you in like 2.5 seconds, seriously,” Brittany says.”I feel like I’m going to throw the f–k up.”

When she steps out of the room with Dr. Jenn, Roxanne tells Briana that Brittany’s real dad is dead.

Watch the emotional video below:

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