Chris Taylor, the man in question, hosts a popular television show in Australia called The Chaser's War on Everything. He was given an interview on Sunrise, which is America's equivalent of Good Morning America in Australia, which is where this clip originates.
Thankfully, Wikipedia stated that this was a hoax. From their page on the matter, they state: "On the ninth episode of the show, Chris Taylor announced that he planned to divorce his wife, but he didn't want to ask her "the usual boring way," but do "something special, something she'll remember". The segment shows several of Taylor's attempts to "pop the question," including hanging a sign over a freeway, and "proposing" on a big screen at the Tropfest film festival. For the finale, Taylor introduces the interview of him on the morning television program, Sunrise. In the interview, Taylor asks the host if he can send a quick message to his partner, he then proceeds to tell her to "Get the fuck out of my life." This finale from the segment has recently been leaked onto the internet, and has been widely distributed by email. Many viewers believed the segment was actually real but Taylor admitted on national radio station Triple J that it was set up, was actually filmed after Sunrise went to air and shown on The Chaser's War on Everything only at this time. The hosts of Sunrise also admitted it was a set up. Sunrise replayed a censored version of the clip on August 21, 2006 when they had the Chaser team on the show promoting their new DVD."