Photo: Chris 'CT' Tamburello Lies At Longtime Love Diem Brown's Hospital Bedside

A moving peek at the "Challenge" stars' enduring friendship.

Chris "CT" Tamburello and Diem Brown of MTV's "The Challenge" have shared an epic love story spanning over eight years, and regardless of whether they're "on" or "off," their deep affection for one another knows no bounds. Recently, Diem was diagnosed with colon cancer after beating ovarian cancer twice before, and this photo of CT lying at her hospital bedside, hand intertwined with hers, is all the evidence you need of their extraordinary bond.

"Sometimes just being there for someone can be the difference between a good and bad day. @diembrown could definitely use a few... Please go to her support page: www.medgift.com/diemsnextchallenge #medgift," CT wrote with the Instagram photo below.

This is friendship in its finest, most beautiful form. You are both in our thoughts.

Watch: Surviving Cancer with Diem Brown