“Oh yeah, uh, it was alright.” – Bismuth
“Alright? It was what you came for, wasn’t it?” – Steven
“Uh, well…” – Bismuth
Then Bismuth looks longingly toward Pearl as she skates along, which causes Steven to exclaim, “wait. Pearl? Bismuth, you’re here for Pearl?”
Bismuth then covers his mouth to keep him quiet; she doesn’t want Pearl to hear about her crush. I guess if you wanted to be a lame stickler, you could say this is just Bismuth wanting to be friends with Pearl but look at the rest of the episode. Those opening moments aren’t just an example of the favorite trope of shippers, characters looking at each other to establish romance, it’s setting up something more concrete.
Pearl rolls up the arms on Bismuth’s shirt and unbuttons it, all while Bismuth blushes. I mentioned queer energy earlier and there’s nothing quite as beautifully lesbian as blushing over your crush rolling up the sleeves of your button up shirt. (This of course assumes Bismuth is a lesbian like Pearl. Maybe she’s bi or pan!)