originally planned. Arlene, Hayley's trainwreck of a mother, blows into town. She crashes their wedding reception and announces that she and Hayley's father have tied the knot. When it comes out that Arlene is pregnant, Mateo suggests adopting her baby. Arlene refuses, and eventually miscarries. Later that year, during a launch party for Ryan's company, Incredible Dreams, everyone is drugged with a libido enhancing drug called Libidozone. Mateo is found in bed with Arlene; Hayley, having enough of her mother's antics, later strangles her. However, Mateo finds out that Hayley did not really kill Arlene: he finds proof in a newspaper article that Arlene faked her death. Mateo is hot on her trail to the Caribbean and drags her back to Pine Valley just in time to prevent Hayley from confessing in court that she had strangled Arlene to death. Finally, Mateo and Hayley's dream to become parents comes true when a psychic that appears on her talk show tells her she is pregnant. Lifeline Mateo's birthday is January 4 [On-air celebration]. External links Mateo Santos Sr.'s profile @ soapcentral.com All My Children characters Fictional characters from Texas Fictional characters from San Antonio, Texas Television characters introduced in 1994 Male characters in television