Mark Ruffalo Just Found Out Brie Larson Was in "13 Going on 30" with Him

Before he was The Hulk, Mark Ruffalo was ~*Matty*~ from the iconic romantic comedy 13 Going on 30, which is currently celebrating its 15 year anniversary.

But there's a pretty major link between the latest Avengers film and this one. Spoiler alert: It's Captain Marvel herself, Brie Larson!

If you're confused AF because hello, Jennifer Garner was the star of that film, its understandable. Even Mark didn't realize. Watch him connect the dots for the first time below!