Boyzone star Shane Lynch - who reunited with his group in 2007 after an eight-year hiatus - insists Robbie will realise what he has been missing since he quit the band in 1995 and will appreciate the friendships he has in the group.
Speaking at the UK premiere of new action film 'Knight and Day' at London's Odeon Leicester Square last night (22.07.10), he told BANG Showbiz: "I remember what it's like not to have the boys and if Robbie can get them back in his life it will benefit him as a human being. Not from a business point of view but as a human being. You've grown up with these guys from a very young age - it's a very impressionable age.
"You experience the highs and the lows of your career together and then when you spend so much time again it's hard. When you get back together again, you really realise how much you miss your bandmates and how much you love them. It's a great security blanket and he'll experience it all. When you're younger you don't realise how important it is."
Take That - Gary Barlow, Mark Owen, Jason Orange and Howard Donald - recently announced they would be reuniting with Robbie for the first time in 15 years with a 52-date tour, and their boy band competitors are also planning to hit the road in 2011.
Shane revealed: "We're planning to tour again next year, and then hit the studio straight after to start on the next album. It's what we love to do."