Welcome to the Christian world, Inigo Leon Castillo.
The baby boy is five months old.
Also present at the ceremony was Kuya Pio Joaquin, the couple's four-year-old son.
In the comments column of Kaye's Instagram post, celebrity moms Melai Cantiveros, Mariel Padilla, Nikki Valdez, Joy Sotto, and Liz Uy were happy for the Castillo family's milestone.
Cebu-based celebrities Kryz Uy and Donna Cruz dropped heart emojis.
Kaye and Paul Jake celebrated their fifth anniversary on December 9, 2021.
The former actress' short but sweet message to her husband read: "45 more years with the boys! Love you!!! Borahae."
For Paul Jake's part, he posted a throwback photo with this caption: "Happy anniversary my love. 5 years naba???? Hmmmmmm. Ok. Ok. Love you from all your boys!!! Birahi… #5yrsago"
Since their wedding, the two Kapamilya stars have been residing in Cebu.
Jake's family owns the pharmaceutical company that carries the brands Bioderm soap, Efficascent Oil, Casino alcohol, to name a few.
The Pinoy Big Brother alumnus has also ventured into restaurants: Yobob Lechon de Cebu and Grillers Steak House.