Okay, I think that we're getting a long-term arc clue or two here.
Faye's resentment towards May and Sam is potentially quite toxic and she's going to have to face up to that at some point. It may be for different reasons but, ultimately, it's about selfish things and things that are only marginally her business (Sam being a local pop culture trend for however long it takes until the Next Big Thing arrives) and May is just trying to be the girl's friend. However, it all links to some of Faye's worse personal characteristics. She can be immature, petty and possessive and these things can cause lots of problems.
The other arc is that I suspect Faye is going to make it her 'project' to help May get fully on her feet. Initially, the motive is selfish ("She'll stop hanging around here") but , in time, she'll genuinely want the girl to escape the trap she got it by being an idiot, something she now deeply regrets.
I felt the urge to argue with May about calling Bubbles Faye's "girlfriend".
They've said "forever", so fiancee is closer.
Since they've exchanged vows and live together it could be considered a common-law marriage.
If memory serves, that additionally requires cohabiting for at least two years. Where are we with that in in-comic time?
Wait, there's a time-limit now? Not just a formal declaration of intent? Since when?
FWIW, Faye and Bubbles have only ever used the term 'girlfriend', so I consider that the right description to use.