Jaxon also took to Instagram to announce his daughters arrival.
"I love you Mila-Mae Manuel. To @davvyxx ...... you are super woman and am in awe of your courage throughout the 9 months of pregnancy . I love you. I can feel the grey hairs coming already with this one 👴🏽".
Davina and Jaxon met years before her time on the show, but rekindled their romance after MAFS aired.
"Ooh, it was very hazy, wasn't it?" Jaxon told Ali Piotrowski on A Current Affair.
"It was probably three o'clock in the morning on a dance floor, probably a bit of a kiss, a pash and dash, and that was it.
"And then I don't know, through mutual friends we rekindled on and off and then we well and truly hit it off pretty much after MAFS aired."
In May, the pair announced that Davina is expecting their first child.
Davina shot to fame on the fifth season of Channel 9's hit social experiment.
The brunette beauty proved divisive among Australian TV viewers thanks to her adulterous affair with co-star Dean Wells which proved to be the biggest cheating scandal of the series.
WATCH: MAFS' Davina says Jax is the love of her life