Meet four-year-old Sabrina.
When she found out same-sex marriage isn't legal in Australia, she wanted to do something about it. So she wrote a letter to the Prime Minister.
Sabrina's friend Lukas explained to BuzzFeed that she wrote the letter after hearing he had to travel to New York to marry his partner.
PM Tony Abbott is yet to respond to Sabrina's letter.
Let's hope he does soon or we'll be sad forever.