How should this be handeled

You are being cuckolded it sounds like.

"We are not a couple we are FWB's"

You aren't a couple, you are FWB. You say so yourself. Your profile is written as a SM, with "I/we" thrown in to include your friend(s). Your certs and photos are all of you. You introduced your friend to a couple you know and it backfired. You can ask her to stop seeing them, but she doesn't need to.

The legal relationship started before the introduction of my girl. There had never been a problem before in the lifestyle or everyday dealings with this couple. Which is why I introduced them to each other.

SMH

You have learned a lesson about swinging and casual sex, never mix business and pleasure. Swinging is all about the pleasure and fun of causal sex, if you mix business you will deal with people that will use you.
To trust a lawyer that is fucking your girl with free legal advice is not good. No lawyer can give free legal advice in exchange for sex its illegal and they could be disbarred.

No they had said they would help before i introduced them. I did not ask them for help they offered the help. then didn't think they needed to tell me they were not going to help.

no, no no! Fuck them, they are, "me, myself and I". Are they Lawyers? If so that is what they learned in Law School, fuck the client.

Well THAT's some confusing convoluted shit right there.

Was your plan to use your girl as barter for the legal work? Was any payment arrangement made at all?

Have you spoken to the couple about what your girl told you? Why does she know? I mean, why would they tell her unless she's now more part of them than part of you?

If she truly is still "your girl" why would she want to continue seeing people that were yanking you around?

Seems like there's some 'splainin' to do!

~rabbit~