The way they're holding each other in the upper panel
isn't really how hetero same-sex friends often hold each other. I want you to imagine your hands on a friend you're not into
that way in the places that Storm's are, looking at them with that expression. The hand on the cheek, other arm all the way around their back, so your hand is on their shoulder, pressed together, leaning into them so your neck is forward, noses almost touching, while they smile wide-eyed at you as you look straight into their eyes.
I'm not saying they're a couple, but that is
something.
Them, embracing like that, looking into each other's eyes, so close, so happy, and the idea of Sage going, "Let it happen. It's only natural," is... it's not even subtext if that's really the case.