Aaron Carter
The former teen star was found dead at his home last year, at the age of 34.
The Backstreet Boys singer said his love for his sibling “never ever faded”, despite them having “a complicated relationship”.
Aaron – the younger brother of Backstreet Boys' Nick Carter – began his music career at seven years old, and released his first album at nine.
Aaron has denied his brother's allegations of threatening behaviour.
The pop star said he 'started to find boys and girls attractive' as a teen.