This Twitter user has gone viral after sharing the touching note her brother wrote to her after finding out they were actually half siblings.
The girl came home one to day to a bundle of sweets and the following letter...
"I just wanted to let you know how much I love you." the note began
"I don't care what people say you are always going to be my full-blooded sister, you are the best thing that happened to me."
"I love you with all my heart, thank you for helping me on my worst and thank you for leading me the right way."
"I will always be there for you, just like you have always been there for me. I love you, with love your annoying brother."
The note has been shared and liked tens of thousands of times and we can see why - these two clearly have a very special relationship!