"Thank you Derek for watching over us all & showing me to live my best life with our daughter like it could be our last. So much love," Abraham wrote in the post.
"Teen Mom" star Farrah Abraham shared a tribute to her late ex and daughter Sophia's father Derek Underwood on the 10th anniversary of his death.
On Friday, the reality star posted a series of photos and videos of her and Sophia visiting Underwood's grave and spending time with his family in Saint Joseph, Missouri. Underwood died in a car crash at age 18 in 2008, just two months before Sophia -- now 9 -- was born.
"These last couple of days have been some of the best days in my life, today is the 10th Anniversary of Sophia's Father, Derek Underwood, the love of my life's car accident 12/28/2008 that changed my life forever," Abraham captioned the post. "Seeing Sophia spend the night at her dads parents house on the 10th anniversary fills me with joy."
"I can't believe I even lived to see this day as I never thought I would get through the sadness, suicidal thoughts, depression, anxiety and hardships of loosing [sic] someone I loved this much who I thought I would be with today," she continued. "Today marks a new decade with the family and loved ones who held through this decade and now were filled with love, gratefulness, and confidence that we are blessed with the best angel of Derek watching over us, this new decade, new year will be one of our best and I'm so thankful and feeling so happy."
Abraham concluded the post with a message for her late love. "Thank you Derek for watching over us all & showing me to live my best life with our daughter like it could be our last. So much love," she wrote.
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In the tribute, the MTV star showed Underwood's grave, which was covered in flowers, confetti and balloons. Abraham and Sophia took photos with Underwood's family at the site.
"As far as I can see, grief will never truly end," she added on her Instagram Story. "It may become softer over time, more gentle, and some days will feel sharp. But grief will last as long as love does -- forever. It's simply the way the absence of your loved one manifests in your heart. A deep longing, accompanied by the deepest love. Some days, the heavy fog may return, and the next day, it may recede, once again. It's all an ebb and flow, a constant dance of sorrow and joy, pain and sweet love."
The "Ex on the Beach" star also posted a series of photos of his obituary, wrecked car and images of her with him in happier times before his death on her Stories. She also made a YouTube video, which you can watch below.