The 'Behind Closed Doors' singer ' who has children Junior, five, and Princess Tiaamii, three, with the glamour model ' is relieved he is no longer on bad terms with his former spouse and they are now able to be civil to one another for the sake of their two kids and Harvey, Katie's eight-year-old son from a previous relationship.
He said: 'After flying back from our trip to Australia, I dropped the kids off at Katie's on the way home from the airport and it was really nice as I got to hang out with Harvey while Kate caught up with Junior and Princess. He was showing me all the drawings he's been doing ' he's really got into it lately.
'Things are amicable between Kate and me at the moment and I'm really keen to keep it this way for the sake of the children. It's weird having been with the kids solidly for three weeks and now not seeing them for another three, but that's the deal and we have to share them.'
Peter also revealed his young son Junior has become a fan of teen pop sensation Justin Bieber - but he can't get his name right.
He wrote in his column for new! magazine: 'While we were in Australia, he really got into Justin Bieber, but he calls him Justin Beaver. I keep telling him that's not his name, but he won't have it.'
Katie and Peter separated in May 2009 and their divorce was finalised in October that year.
The brunette beauty is now married to cage fighter Alex Reid, while Peter is still single.
Peter Andre crowned Celebrity Dad of the Year 2010Justin Long ‘Would Love To’ Star In ‘Die Hard 5′
