It's also important to remember that Bubbles didn't trust or like Faye that much at first. Their friendship developed slowly and has deepened into something more. I think everyone can acknowledge this now. If you look back to the comics three years ago, they connected with each other in this amazing and really magical way over time. It's beautiful and amazing to me. If you look at Bubbles in the beginning and look at her now, she's changed so much. No armor, her hair's changed, her attitude has changed, she's relaxed around Faye and they joke and laugh with each other. Every now and then, like when Evie was being a dumbass, Bubbles' wall comes back up, but it's not up nearly as much these days.
If Faye goes to Bubbles and says "I'm sorry, I can't be with you" it would totally break her heart. And she would retreat back into her shell, into the scared, angry, person with serious trust issues she was before, I know it. Because honestly? I do think she's been waiting for Faye. Maybe not entirely on a conscious level, but she is in love with Faye, and I think everyone needs to acknowledge that.
Don't break her heart, Faye. You won't be able to do it without breaking yours too.