Source: Bang Showbiz NewsPhotos: AFP, ReutersRobbie Williams has admitted being with one woman "feels unnatural".But the 'Candy singer - whose wife Ayda Field gave birth to their first child Theodora Rose last month - said he has no problem avoiding temptation and staying faithful since giving up alcohol.He told The Sun newspaper: "It's a hundred times easier when you don't drink, and I don't drink."If I drank, we'd literally be f*****. If I drank, I could not keep it in my trousers at all."I always have my wife with me. Always. I haven't missed playing around but I'm still a guy."This will be an on-going project. Feels unnatural - but so far, so good."The 38-year-old singer recently said he is happier than ever since becoming a father on September 18. He said: "Ayda went into labour at 4am and at 3.15 in the afternoon Teddy popped into my world and it changed my life."It was cosmic -- it's a magical, magical moment."She's got a bit of acid reflux but she's such a chilled baby. I enjoy changing nappies and I really like being a daddy."I don't want to be anything other than a daddy and a husband. Life's pretty perfect right now."