It's hard to keep up with every celebrity's personal life. It seems like one minute they're dating one celebrity and the next they're dating another.
And some of these relationships are pretty low-key, so we don't hear much about it.
For example, Kate Hudson recently announced she's pregnant with her third child. I didn't even know she had a child!
Turns out, before Hudson met her musician boyfriend Danny Fujikawa, she was married to Chris Robinson, who was the singer of the rock and roll band The Black Crowes.
They were married for seven years and had one child together, Ryder, in 2004. When they split up, Hudson had a child with her boyfriend Matt Bellamy, an English musician, in 2011.
If that's news to you, these next celebrity couples who share a child together will surprise you even more...
1. Tom Hardy and Charlotte Riley
Tom Hardy rose to fame in the U.S. after appearing in hit movies like Inception, The Dark Night Rises, and Mad Max: Fury Road.
I'm sure most of us have wondered about this Hollywood heartthrob's love history, and you won't be disappointed.
Like many actors who have fallen in love on set, Tom Hardy met English actress Charlotte Riley when filming the 2009 UK TV series Wuthering Heights.
This was the time the actor was starting to make a name for himself in America, so not many people noticed when the couple welcomed their first child, Louis Thomas Hardy, in 2015.
2. Joseph Gordon-Levitt and Tasha McCauley
You probably could have never imagined that the baby-faced Angels In The Outfield actor would one day have a child of his own. In fact, he has two!
His wife, Tasha McCauley, is not a Hollywood celebrity, but she's quite well-known in her realm of expertise, which is robotics and business administration.
She's not a big fan of the limelight and tries to keep her personal life as private as possible. What we do know is that they share two sons, but they're so secretive we have no idea what their names are!
3. Jeremy Renner and Sonni Pacheco
You may know Jeremy Renner for his role as Hawkeye in The Avengers or as Hansel in Hansel & Gretel: Witch Hunters, but what most people don't know is that he married a well-known Canadian actress for a short time.
Sonnie Pacheco and Renner tied the knot in 2014 when Pacheco gave birth to a baby girl, Ava Berlin, a year before.
Less than a year later, Pacheco filed for divorce.
4. Megan Fox and Brian Austin Green
About a decade ago, Megan Fox was everywhere on the big screen and magazine covers, but that was all before she had children with prominent actor Brian Austin Green.
They share three young kids together: Noah, Bodhi, and Journey.
The couple have had their ups and down, though. They got engaged in 2006, called it off in 2009, and got engaged again a year later. They got married in 2010, but Megan filed for divorce in 2015.
When she heard she was expecting her third child, Journey, they got back together.
5. Norman Reedus and Helena Christensen
The Walking Dead star fell in love with former Miss Universe winner Helena Christensen almost two decades ago. They were together for five years, until they decided to part ways.
They welcomed their first child, Mingus Lucien Reedus, in 1999 and still share joint custody. After all these years, both of them still have one child.
These next celebrity couples are even more surprising...