Alina and "Pedro"
Alright, so, Billy is way too giddy about being able to have a legit sword battle. He lungs forward, like he'd seen in one of those real old movies like The Princess Bride or Lord of the Rings, and clashes his blade with the pirates.
Out of the corner of his eye, he sees the blinding light that Alina is emitting and is glad to see she's alright and able to protect herself. The giddiness he's feeling is so prominent that he doesn't even think when she says his name. "Not a clue!" He responds as another clash with the sword. Whelp, there goes any attempt at a cover with Alina and a firm confirmation that she totally knew.