It's fine!! there are 23246732487 types of smiling idiots and they're all so uniquely different. God, mood on the fake smiles though. He gets called on it sometimes in canon because his fake smiles just... they just hurt to look at okay.

LOL. See I'm very curious about that, if they would squabble and quarrel because Allen can be like that with some of his comrades/cr, he can sass back with bitingly dry wit and it's great, he can get so indignant and huffy when clinging to his tattered scraps of dignity—but it takes punching his buttons a certain way to make him ditch his manners and he tends to be incredibly gentle/patient/understanding with girls (who aren't trying to kill him/others) more than with boys. So more likely he'd just be Way Too Nice and Understanding, at most just sulking a little but still taking the abuse like a champ LOL. BUT I AM CURIOUS, because her personality is one that will punch his buttons too I think, he's just more likely to try and suss out why that is and be Painfully Understanding while Believing She's Fundamentally a Good Person and inadvertently get under her skin that way because that's just how he is.

I'm so sorry. He's an empathetic menace who cares too much, BUCKLE UP.