The 18-year-old made the announcement Thursday on TikTok with a video of himself and text that reads, "When I finally told my friends and family I was gay after being scared in the closet for 18 years and all they said was 'we know.'"
Tik Tok / @noahschnapp
Interestingly enough, he also included the caption, "I guess I'm more similar to will than I thought."
Schnapp plays Will Byers on "Stranger Things" and fan speculation over the years has been that the character is gay, as it's clear he has a thing for Mike Wheeler on the show ... so it seems Schnapp is also confirming the fan theory.
Schnapp and his "Stranger Things" costar Millie Bobby Brown are super close -- the two hang out all the time and have appeared on late-night talk shows together over the years.
As we reported, Schnapp recently started his freshman year at the University of Pennsylvania -- where he's made quite the splash -- we even got vid of him jumping into a pool at a party earlier this year.