That's what the others would never understand, he thought to himself sometimes. That they've always been this way, long before Wally started to notice the faint curves of his best friend's hips or his brilliant, just a tiny bit feral smile, and it'd be this way even if things fell apart.

... Till Someone Gets Laid. There's a fine line between friendly (if salacious) teasing and something more… dangerous. How far are they willing to push it? [Birdflash. Post S1. Gift fic.]