The tennis icon has been with his current wife Xisca Perello since 2005 - before be became the superstar he is.
Nadal, 36, has won a record 22 slam titles in his remarkable career.
The Spanish favorite reportedly began dating Xisca in 2005, the same year he won his first grand slam at the French Open.
But rumors say the couple knew each other for years before they hooked up.
Xisca's real name is Maria Francisca Perello. She worked in sports marketing in London in her earlier years.
The 34-year-old is currently a project director at Nadal's foundation, which he launched in 2008.
Having dated for 17 years, the couple tied the knot in a stunning Spanish castle setting in 2019.
They were engaged in January that year before marrying in October at La Fortaleza in Majorca.
There were said to be 350 guests present, including Olivia Colman and Hugh Laurie.
The couple confirmed this summer that they are expecting their first child together.
Xisca was spotted at the French Open with a baby bump.
In a previous interview, Nadal discussed his wish to have children but also the challenge that provides with his career.
Speaking in 2017, he said: “I would love to have children: boys, girls… I’m a person who loves kids and I’m a family guy.
“But also I tell you that the reality is, the years keep passing, I would like to start to do all of this when my sporting life determines it.
“I think it’s also above all about looking after the kids.
“I don’t know if it [travelling throughout the year and having children] is ideal.”