I love ur a/b/o headcanons! I feel like I’ve read and seen a lot about omega gale and his heats but what about john’s ruts? Considering gale is someone who usually likes to b control, I wonder how they handle it when john is in rut!
Bold of you to think that Gale won’t be in control during John's ruts 😆 Bucky is single-mindedly focused on breeding during his ruts, but that doesn’t mean he doesn’t listen to what Gale wants or needs.
In the omegaverse au I have in my head, an alpha in rut isn’t feral, they won’t force themselves on an omega just because of the rut. They still need all the consent they would otherwise. Actually, due to their heightened sense of smell during ruts, I think they would be turned off by omega fear or distress pheromones more easily. And knots take longer to deflate during ruts, so it's essential to be in a comfortable position for it.
For Bucky specifically, his ruts are about physical contact first and foremost. He’s like velcro, Gale can’t go further than the bathroom without Bucky being attached to him. It’s about the instinct of protecting and bonding with his mate not only during sex but between rounds too.
If Gale's mind is clear (he’s not in heat), he can guide them through the rut pretty easily. I think he’s good at pacing Bucky, not letting him overexert himself even if his instincts are pushing Bucky. He also has some tricks to calm Bucky down if Bucky's getting too worked up, like asking Bucky to help build a nest with him or asking him to scent various clothing items.
If Gale's heat syncs up with John's rut, they get really messy and bruises are inevitable, but ultimately, the senseless mating part only lasts for a few hours.