A photograph taken in Melbourne last December showed Hurley with her mouth open wide, as she moved in to kiss her fiancé. Speaking to Hello magazine, Warne said that the image had inspired the name.
"Elizabeth calls me a lot more than just the Big Blond – she has dozens of names for me, all of them too embarrassing to share."
In their first joint interview, the couple - who were first linked in late 2010 - said that they work well together as they are "very similar in many ways".
"I think we just 'get' each other and it feels like we have known one another forever," Warne explained.
"I understand why Elizabeth and I getting together initially seemed strange to some people and why it created a lot of interest. We are from different worlds, but funnily enough they are very much the same, too."
Hurley, currently starring in Gossip Girl, commented: "I am extremely happy when I'm with Shane. We are very similar in many ways. Despite differences in our backgrounds and careers, we both come from very secure, loving homes and to me that says a lot."
Warne also took the opportunity to once again dismiss claims that he underwent surgery: "I can 100% tell you that I have not gone under the surgeon's knife or had a facelift."
The full interview appears in the new issue of Hello, out now.
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