ship
invested
the one-line answer
To root for two people to be in a romantic relationship.
Ship comes from relationship. You ship two people means you want them to be together romantically. Shipping can be for real people, fictional characters, or celebrities.
mainstream
Your coworker might use this word.
01 / in the wild
hear it move.
fandom
I fully ship them. the chemistry is undeniable.
I want those two people to be together.