The brunette beauty became engaged to David McIntosh, a former star of TV show Gladiators, in March, just three months after meeting him at a New Year's Eve party.Brook now admits she was blindsided by the "surprise" proposal, calling it the "the most humbling, beautiful moment of my life," but she wanted to make sure her boyfriend was serious before accepting.She tells Hello! magazine: "I saw this beautiful diamond ring and I think my first reaction was, 'Are you sure?' He assured me he was, so I said 'Of course I will.' He slipped the ring on my finger and we kissed... It was so genuine."Brook adds of her marriage plans: "I think it took both of us by surprise, to be honest, how quickly things have progressed... But I've never met a guy like David before and although it seems soon to be planning our wedding, there's nothing to wait for in my mind because at the moment everything's fantastic and there's no reason why it can't continue to be like that."I never thought I was going to be that girl who wants the huge dress with a 10-foot train, but now I want the biggest, most gorgeous dress ever."