“Magnus’s clothes work great on Magnus, not you. You should have just asked him to take you shopping and he would’ve picked out something that works on you. Although I get wanting to wear your boyfriend’s clothes. I’d want–” He speeds up, running off again.
“You’d want what? It can’t be that bad, we’re not talking about serious stuff. I can take criticism.” Alec says gamely as he catches up with him.
“If we were together it’d make me even crazier to see you wearing my shirt than it already does now when you borrow them. Because I could actually do something about it. I’m just glad Magnus seems to know how lucky he is.”
[…]
They’re almost at the cave when the greedy, less accommodating side of Alec wins. “What did that mean, earlier?” he blurts out, studying Jace’s face.
“He gets to know what you taste like and I don’t.”
Source: Truth or Truth, by selfinduced – Shadowhunters (TV) [Archive of Our Own]
In Edom, Jace is linked to Meliorn… and Seelies can’t lie. (Warning for cheating, but this is delicious.)