Ronaldo on his return was named Player of the Season for Manchester United as they failed to secure a return to the Champions League.
Messi in his first season as a Paris Saint-Germain player helped them recapture the Ligue 1 title.
Both players are now on vacation spending time with their families.
Messi and Ronaldo
Along with a photo with his son on a plane was a message that said, “Happy birthday my son!
“How does time go by…?! Will we still play together?!
“The most important thing is to continue being the boy you are with a huge heart! Best of luck, puppy! Daddy loves you very much.”
The 34-year-old star was spotted at the wedding ceremony of his former teammate Jordi Alba.
Messi and his wife Antonela Roccuzzo posed for pictures at Alba’s wedding in Seville.