This happened in 2011, in the movie Catch Me, I'm In Love. The film, directed by Mae Cruz-Alviar, starred Sarah and Gerald Anderson. Matteo played the ~third wheel~ to Sarah and Gerald's characters.
On February 27, Catch Me, I'm In Love cast member Janus del Prado posted a throwback photo, which was an outtake of a scene with Sarah and Matteo.
Addressed to Matteo, Janus wrote in the caption of his post: "I remember the days na nagflifliptopan tayo sa set, @matteog. Ginawan pa kita ng rap para sa scene niyo ni @justsarahgph. Kahit bulol paps epektib pa rin at nauwi pa rin sa kasalan. Buti na lang ikaw yung pinili ni Sarah at hindi si Mang Kulas. Congrats sa inyong dalawa, paps. Rap battle ulit soon."
In the movie, Matteo played the role of Sarah's neighbor who always expresses his thoughts through rap.
Janus posted another outtake from the movie, which also featured him and character actors Alchris Galura, Arlene Muhlach, and Ketchup Eusebio.
Prior to working with each other in Catch Me, I'm In Love, Matteo had a crush on Sarah. He even described working with her in the movie as a "dream come true."
After Catch Me, I'm In Love, Sarah and Matteo worked together in guest appearances in ASAP and Sarah's defunct show, Sarah G Live!, which aired in 2012 and 2013.
In September 2013, Sarah and Matteo officially became a couple. The two got married in a civil wedding ceremony on February 20, 2020.