Pretty hard to backpedal now after so many of them have shown tendencies already. Maya, Josy, Jill and Bella (although questionable), Quinn, Camila, Riona.. and you'd have a very hard time convincing me that Sarah and Melanie have never crossed that line before with at least each other.
To be clear, I don't seriously expect to see all these variations come true, like
Holy Bacchus said it, it's just not that kind of a game. Probably for the better too. But they most definitely are - to various degrees - into girls as well so it's a little too late to avoid that trope.