like someone in love

Geto and Megumi are both the black wolves, the yang in their relationship with Gojo and Yuji respectively. However they are also parallels to one another. Both of them represent the black yang, both are deeply emotional people, and both are also partners and secondary to the strongest sorcerer of their generation. Geto who was the part of the strongest duo along with Gojo, and also Megumi who was the one who saved, and continues to protect Itadori even after he swallowed Sukuna’s finger. They also tend to be associated with serpents (Megumi - Oboro the snake, Geto summons a dragon). More under the cut. 

Who even says he's my one and only about a best friend

Geto says he'll never be able to laugh in this world but in his final moments whatever Gojo said made him laugh one last time

Gojo decided to reset the jujutsu system just so he can create a world where Geto would have been able to laugh

Even when his technique (which is considered really strong) shows him otherwise his soul literally knows the difference between real and fake

The literally had a whole ass break up in front of KFC

Literally everyone knows

Akutami sensei himself said that he can't imagine Gojo being faithful to a woman

Gojo's theme song is literally Avicii's Shame on me. Have you read the lyrics??

I sat by the ocean 

And drank a potion, baby to erase you 

Going off to a beach picnic Ig UwU