Antoine was born in Lebanon and grew up in Australia. A former attorney, he studied law and commerce at the University of Sydney, focusing his work in area of family law and research. In 2011, he met his wife, Maria, in NYC and 12 months later they married. While working as Private Secretary to Archbishop Anthony Fisher OP in Sydney, he learned about FOCUS. He moved to the US in 2016 with his wife and their two children to begin working for Curtis Martin, the Founder of FOCUS.