I found Preston Oliver by accident while researching Ian Winningkoff.
According to the IMDB, he was born in 2006 and grew up in Las Vegas. He got bit by the drama bug in fifth grade, when he was cast as a pirate in a version of Peter Pan. Acting classes and professional representation followed, and, at age 12, his tv debut on two episodes of Chicago Fire:
As the troubled son of richster Bradley Boyd (Justin Belfi), he sts Dad's boat and garage on fire, is sent away for counseling, and is never mentioned again.
Left: Costar Jon Seda's dick
Less than six months later, Preston was cast in two episodes of This is Us, as the son of Kevin. played by Justin Hartley. It's a soap opera, so Kevin's character arc was very complex and loaded down with tragedy.
Left: the butt of costar Logan Shroyer.
Then came an episode of Roswell, New Mexico as young Michael. one of the main characters, who abandons a relationship with a man to fall in love with a woman. I don't know if he's bisexual, or got "cured" of being gay. He's played by Michael Vlamis.
Preston's big break came in the Disney Channel's Secrets of Sulphur Springs, about a boy and a girl solving mysteries involving time travel.
More Preston after the break