In 2016, Kirsten came across an image that stopped her right in her tracks.
It was a picture of a young boy doing swimming lessons at a local Brisbane public swimming pool.
The photo had been uploaded to a Facebook-equivalent social networking platform, designed for families who have used the same American sperm donor. The platform had dozens of families on there from across the world — each sharing updates on their kids.
Kirsten had immediately recognised the swimming pool and swimming instructor — because she too was originally from Brisbane. So she decided to contact the mum who had uploaded the photo, given Kirsten also had a child from this same sperm donor.
"I messaged her out of the blue and knew it was a bit weird. But the circumstances were so interesting. I mean, the sperm donor agency we used wasn't available in Australia. I had my son in London. So that's why it was so bizarre to see this mum lived in the next suburb over from where I was originally from in Brisbane," Kirsten said to Mamamia.
Kirsten ended up moving back home to Australia and decided to properly catch up with the mum from the swimming pool. It was the beginning of a beautiful, modern friendship.
Watch Mamamia Confessions: What I'd tell my 15-year-old self. Post continues below.