David Parnes Posts Touching Tribute to His Brother After Sharing He Was Diagnosed with a Brain Tumor

On Thursday night's episode of Million Dollar Listing Los Angeles, David Parnes shared some devastating news about his family. His brother, Michael, had been diagnosed with a brain tumor. It's been especially hard on the agent given how close he is to his older sibling.

"Growing up in London my parents got divorced when I was about 10. I have an older brother, Michael, who was like my dad in many ways. My brother's the coolest guy. He is charming, he's polite. Literally, I believed that he was an angel," he shared during Thursday's emotional episode. "My brother's been sick for a couple of months now. He has a brain tumor and from going from shock to scared to worry to every emotion you could think about."

He also shared during the episode that his brother would have to undergo radiation and possibly chemotherapy to help treat the tumor. During an in-episode interview, he later added that his brother means "everything" to him.

Following the airing, David headed to Instagram to share a touching tribute to Michael as he continues his battle.

"You're my and our younger sisters Natalie and Alexandra's idol, our inspiration and you've been our guiding force for everything we've achieved. You make the impossible seem possible, the unachievable achievable. You make all the bad, seem better," he wrote, later adding, "Life tests us at unbelievable levels at times and the way you've dealt with this has shown me what's really important. Mike I love you so much and I know you'll be OK. I'm so grateful to call you my big brother."

Check out some personal photos from David, below.