After Williams quit the chart-topping British boyband in 1995, he publicly attacked Barlow for the way he was treated when he was a member of the group.
As Williams solo career went stratospheric, Barlow decided not to retaliate - despite his initial instinct - because his popularity was nothing compared to that enjoyed by Williams.
But Barlow is ready to leave the past behind and form a new friendship with the ANGELS hitmaker.
He says, "It's 10 years since I talked to Robbie. I've had messages from friends saying Robbie sends his love and is trying to get in touch.
"But my mobile number hasn't changed in all that time. I'm not hard to get hold of. If he really wanted to reach out to me he could do.
"I know the day will come and I'm here when it does arrive."