Ok, so you know how EVERYONE in this garbage fandom hates Stevidot because it's pedophilism?
Well here I'm going to tell you why that's not the case.
Peridot is thousands of years old. But does she really look like an adult? No. She's the same height as Steven and doesn't have any similarities to that of an adult woman.
Gems age differently than humans, so thousands of years in human life could mean 14 years in Gem life.
We already know that Peridot is an Era 2 Gem from the episode "Too Short to Ride". So there is the possibility that if she were expressed in Gem years rather than human years, than Steven and Peridot could be the same age.
Using an equation I developed:
x = (Gem age of Peridot) = ~3000 (approximate human age of Peridot) / 191.67 (estimated human years per 1 Gem year)
x ≈ 15.652
I used 3,000 years because Era 2 Gems were formed sometime after the Rebellion, which (might not have) ended 4,500 years ago with the Corrupting Light.
I understand that Peridot's birth is more around 3,500 or 4,000 years ago, but if you're still not satisfied, then:
Tough luck. I'm out of ideas.