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Based on a truly ridiculous conversation with Kalpurna about a hypothetical Stilinski Twins situation that ended up sounding something like:
“FUUUUUUCK, is it a sweet valley high situation where Stiles is very aware that his twin is way more attractive and confident than he is, EVEN THOUGH THEY'RE IDENTICAL, and he always ends up with the hotter significant others and more friends and Stiles guesses that's why he's attracted to the pack at first, because it's something that's just his, not his twin's too. But of course, Stiles's twin gets bit and now he's part of Derek's pack, and Derek doesn't snap at him like he snaps at Stiles, never slams him into things, fucking FIGURES, STILES'S TWIN GETS EVERYTHIIIIIIIING.”
Kalpurna/good ideas OTP.