Parallels
Keith paralleling Adam is intentional.
One finally gave up on Shiro.
While the other never gave up on him.
Adam was Shiro’s romantic partner who once was there for him and yet vld paralleled him with Keith who has shown time and time again to always be there for Shiro and never gave him up.
Both men love Shiro.
Both men have a past with Shiro.
And both men reacted differently to Shiro leaving.
One tried to make Shiro stay but ended up losing him.
The other waited for Shiro to come back despite what anyone said and did get him back.
Shiro’s/Kuron’s final thoughts in s3 was of his team and lastly Keith–not to the past with his ex.
Keith literally decided if he couldn’t save Shiro than there was no point in living without him.
The parallels of Sheith with Zaggar and Keith’s parents are also important.
Keith’s parents met the same way Keith found Shiro again.
And Zaggar’s love destroyed them while Sheith’s love saved them.
Adam, while definitely heartbroken over the breakup, has never been mentioned by Shiro or was Shiro’s reason for returning to Earth–remember Shiro was the only one who never spoke about anyone he left behind.
And that’s because he didn’t have anyone to return to.
Which a lot of people, myself included, felt that Shiro probably didn’t see Earth as his home anymore.
If Shiro was really still in love with Adam then he would have mentioned wanting to return to Earth for someone important to him like everyone else did. Doesn’t matter if Adam was thrown in “later” Shiro still never expressed interest in returning home and based off all the info about s7e1 and the trailer–Shiro still doesn’t look excited by the idea either.
Platonic or not Sheith, from a writing and animation perspective, makes the most sense. Shiro has someone in 6 whole seasons who never gave up on him. Someone who stayed as his best friend; his family; his savior; his equal.
We are two seasons away from ending Voltron for good. Now is the time for establishing the romances vld has laid out.
So it is very interesting to see parallels between an ex and his actions where he ultimately threw their relationship away over Shiro choosing his dream over him versus a potential lover who has been all the key aspects for Shiro and has always been there since the beginning and never once stopped Shiro from pursuing his goals.
If that isn’t romantic then clearly people don’t understand writing or how a waste it would be to animate Keith’s devotion and love only for him to watch Shiro return to his ex.
Shiro is no prize. Shiro isn’t owned by anyone and will make his own decisions like he did for Kerberos.
If he remains single then so be it. Sheith has always been perfect as best friends and that’s canon.
But if Shiro decides to be with Keith over Adam or any other suitor then it makes sense based on what we have seen in the show and the progression of their relationship–as the staff said Sheith’s bond will be stronger after s7.
And that is what makes Sheith beautiful at the possibility presented to us.
Shiro never said he saw Keith as his brother or adopted him. Shiro has never once thought less of Keith or that he was just a kid to him. Shiro always treated Keith as his equal and calls him his old friend and is someone he deeply cares about.
Shiro saw the potential in Keith and wanted him to succeed despite the odds.
And Shiro with his illness? Needed someone who would support his dreams despite his odds and ultimately that was not Adam.
It was Keith.
That’s what makes these parallels so very unique.
Adam made a mistake and I’m sure he regrets it and wishes nothing more than to reconcile. And I can’t wait to see the closure they both deserve.
But Keith? He has no regrets because he chose to follow Shiro into space and has never looked back since.
So I don’t see why Shiro should look back into his past when his future with Keith and their potential love is 100% what saved the fabric of the universe and themselves.
Like Keith said: “We saved each other.”
And that right there sums up their entire relationship from beginning to end.