smile.mp4
"Ian, you're allowed to smile" isn't that funny or anything, it's not even really a joke it's just an offhand comment, it's especially not funny enough to be laughing with such obnoxious glee when talking about it later.
This alone would be more than enough proof that she has a huge crush on Gabe, when girls really really like a guy there's a kind of Halo effect where everything he does is amazing and he's sooo funny and everyone else is just like okay.
It has got to be painful that the only girl idubbbz has ever been with just openly has a huge, almost teenager-esque, crush on a guy that she regularly watches beat you up.