After the love of his life and his newborn son both died just months apart, the man who was left behind has come forward to proclaim his new vow to honor them. The man’s “beautiful” bride-to-be died on December 29 after she delayed cancer treatment to give birth to the couple’s son. Although she bravely delayed cancer treatment to protect her unborn baby boy, he died a few months before her passing.

Now Jackson is left behind to grieve both the love of his life, Brianna, and their son, Kyden. And as he tries to put the pieces back together and move on with his life, he has decided to make a vow to “forever love” his beautiful and brave fiancé who left this world much too early.

Jackson turned to social media to share his proclamation of love.

When she was just seventeen weeks pregnant, Brianna, who was from Sydney, Australia, got diagnosed with an aggressive and dangerous form of leukemia. It was a rare type that put her life at risk.

Although she was only eighteen-years-old at the time of the cancer diagnosis, doctors gave her a tough choice. They told her that she could either terminate the pregnancy and fight the rare form of cancer or she could delay treatment and carry her unborn baby to term.

Jackson remembers her reaction vividly. “Without hesitation,” she decided to keep their baby alive. Although she “halved” her own chances of survival by deciding to go through with the pregnancy, she knew it was the way she was supposed to go.

As she battled the intense symptoms of cancer, she kept trying to remain positive for her unborn baby. She dealt with excruciating pain and fevers. However, when she later contracted an infection, she worried that it could be passed on to her unborn son, Kyden.

Family members described the baby boy as a “miracle.” He was delivered by emergency C-section three months early.

In the photographs from the birth, we see the brave mother, nicknamed “Queen B,” as she holds onto Kyden with all her might. She wrote on social media in September.

“Nothing makes me happier than watching my son grow bigger and stronger!”

However, after twelve “short but magical” days with Kyden, he passed away after he picked up a stomach infection that his tiny body could not fight.

During an interview with Daily Mail, Brianna said, “Those 12 days I was able to spend with my baby boy Kyden, holding him, counting his toes and fingers and talking to him like I would when he was in my tummy. They were just so special. They were the best 12 days of my life! Then the most shocking and heartbreaking news was when he picked up a stomach infection, and within hours we were told to say our goodbyes. The infection took his precious life, and our son grew his wings.”

The death of Kyden devastated Brianna, but she decided to keep fighting. But her health took a turn for the worst. She died days after her nineteenth birthday.

Her online obituary states, “You were many things. Forgotten will not be one of them. We will love you forever, Queen B.”