The 39-year-old actor said his close friends have embraced parenthood and becoming a dad is perhaps what is missing in his life, reported FemaleFirst.
"All my friends have kids now. All our discussions on WhatsApp revolve around whether you can fit a buggy on an aeroplane.
"Everyone does things at their own speed, but I'm always quite surprised that I don't have loads of kids. There's probably one last piece of the jigsaw (missing for me). There's definitely something that needs to shift," Cooper told Red magazine.