By pester I mean they'll emotionally and verbally abuse him. He's pretty close to his dad, who had heart surgery a couple of years ago. His mom and sister will scream and guilt him by saying he's adding stress to his dad's life and will make him have another heart attack. Verbally his mom and sister will degrade and insult him.

I feel like not telling them is the best course of action, I'm just trying to find other perspectives on if not telling is the best way to go or not