"I don't want to talk about him, except that I like him," Madison told PEOPLE when asked about reports linking her to the Good Charlotte guitarist.
The possible coupling comes after the duo were spotted in Los Angeles at a coffee shop. The two have also flirted over Twitter, with Madden even hyping Madison's E! show with Tweets.
Though Madden was spotted in at Planet Hollywood Resort and Casino on Sunday Las Vegas – which is coincidentally where Madison lives and the site of the Holly's World viewing party – the blonde bombshell wouldn't say whether she and Madden are an item, calling him simply her "mysterious adventure buddy."
She adds: "I think everyone needs an adventure buddy."