The 'Angels' hitmaker – who performed with the eventual runner-up of the talent contest on UK TV last Saturday (12.12.09) – told Olly he doesn't need show boss Simon Cowell to make him a star and has offered to help him get signed.
Speaking at the launch of 'The Gatwick Factor', a karaoke competition being held at Britain's Gatwick airport this week, Olly told BANG Showbiz: "I'm just a normal guy who has come from nowhere, but ever since I finished the show, Robbie's phoned me every other day and said, 'How are you, how are you getting on?'
"He's really concerned about how I go on now, about my future and he wants to help me out.
"Let's be fair, this guy's been around for nearly 20 years, he's got a lot of experience, and yeah, he's had his highs and his lows like everybody else; but he's got so much advice to give me and I really do genuinely see him as a friend now."
Former call centre worker Olly – whose dancing and singing talents have been compared to Robbie's – has also been offered the chance to go to the US to launch his career Stateside with the 'Bodies' singer's help.
The 25-year-old singer added: "He did offer for me to go to Los Angeles with him. He said, 'Come over and meet my friends,' and I think he really sees a good future for me and that's great."