"Diem knew she didn't have much longer to live," the insider tells Us, "and she didn't want to be engaged under those circumstances." PHOTOS: Celebrity deaths in 2014 Brown's final response was a bittersweet end to their roller-coaster romance, which began when they met and fell in love on the 13th season of in 2006.I know they had a lot of love for each other…They were on and off for so many years. I Love You Always and Forever A photo posted by CT (@theofficial_ct) on Nov 11, 2014 at am PST "You have always been My Angel," Tamburello, 34, wrote alongside a photo of Brown, tucked beside a rosary and a ring. If she had more time on this earth, who knows what would have happened between them? Thru the ups and downs we somehow managed to keep our promise. Our plan to be together forever hasn't changed… And I'm going to hold onto this ring for you till we are together again. I know you will always be with me to give me your strength. If I was going to claw myself out of the hole I dug myself in, what better way to do it than where it all started and with Faith?In a weird way, it was kind of like [Diem] was there.One symbolized the past, the other represented future.The Underdogs chatted excitedly about what they hoped for and what they aimed to leave behind.Brown was a newcomer to reality TV when she made her first appearance on in 2006, but she immediately captured the hearts of the audience.Brown had been diagnosed with ovarian cancer and came on the show to prove that the disease wouldn't stop her from living her life.She made a total of eight Challenge appearances between 20, sharing her roller coaster of cancer battles and remissions in front of the camera.Her relationship with Tamburello was also documented, from their first kiss on with Tamburello in Panama in 2014 when she collapsed and was flown back to New York for emergency surgery.