You got me hooked on the battle couple and since your the only dealer I'm making it your problem!
Imagine its not poetics or gifts or even battle prowess that wins miko over no. its his fucking musical ability!! Tarn gets it in his head to serenade his beloved with someones freshly removed head as a gift for good measure and for some reason that's what does it for miko who pounces him once the song is done. The next day tarn is walking with a limp hanging off her arm like a pampered trophy wife looking like he got mauled by a bear and miko looks far to pleased with herself.
It's funny because Tarn exhibits many qualities her kin appreciate, and frustrates her even more!
Her cousins would definitely roast her in a good-natured way because of the mysterious mech's dedication with fresh kills and lovely courting gifts.
Oh, and they match, too. Pink and purple complement each other!
Miko is sulking underwater because Cybertronians like to stay from it.
Of course, Tarn plants himself on the beach, bank, pier, or rockside to wait for her. If there's wide space, then he's writing scripts into the dirt and sand via his tank treads or using pretty rocks.
I don't know if it's funny or terrible if Tarn's ability doesn't injure Miko. Not out of fated bondmate bullscrap, but because her seablood heritage came out and sees it as not only a siren-like potential mate but entwined in the words are the undeniable score of her other half of a Soulsong.
Instead of pain, it enraptures.
Think of it as some sort of seablood catnip to the average seafolk, but on Miko? She can't tamp down the instinctual urge to warble out her own part.
Tarn is delighted over the fact that they'll have a private duet. Meanwhile, the others (minus Raf, Jack, and June) are increasingly disturbed by the haunting, ethereal noise that is enemanting from everywhere and nowhere as Miko gets back into singing in sea-tongue.
Not even the exquisite temperatures of a hotsprings could overcome their collective anxiety over it.
Jack and Raf calls them out for it because they managed to go against robot Satan and hordes of the undead, and yet a mating call is what spooks them the most.
It's the ambiance, they said. It's the middle of wild nature with an eerie back-and-forth echo of lovely yet haunting notes. Nothing else is disturbed by their sensors. Where is it coming?
It's Miko. Underwater. She knows how to suppress herself and hide her presence. She's enjoys hunting.
Probably culminates into this:
Miko: "What if I fuck him?"
Miko: "But I do it in a way he wouldn't expect it."
Jack: "Miko, I love you, and we spent lifetimes together, but I'm finding out things I don't know if I want to know."
Miko: "I'm gonna peg his ass."
Jack: "... What if he likes it?"
Miko (not listening): "I always wanted to peg an ass."
Jack (giving up): "Find a good harness then."
Raf (who's been there the entire time): "Ask about lube. You'll need it for aft ports."
Miko: "Ratchet’s been running away from me. I'm gonna need a trap because I need more info."
(Cue a reluctant sex ed for Cybertronian frames starring Ratchet with special guests' input on war-frames from Soundwave and Knock Out.)
