So I am super bitchy/whiny today heads up. This is long but hopefully will be slightly entertaining.
A little back story,
1.) FMIL is a little crazy when she drinks (which is often).
2.) FMIL cosigned on FI's car loan last year. FI has never been late on a payment and actually pays over the minimum every month.
3.) FMIL offered to pay for our RD and my bouquet.
4.) My mom is paying for our wedding. We are paying my mom a FRACTION back (seriously comes down to like 2% because she won't let us pay more).
So on Wednesday night FI and I get a totally random facebook message from FMIL with a bullet point list of her "thoughts that she needs to get out before the wedding". This list includes that she wants to be off of FI's loan before the wedding (not happening), how it isn't fair that we are paying my mom (I am pissed that FI told her and we had words on that), how the bride's family should be accomodating her family including PAYING FOR THEIR HOTEL ROOMS AND DRIVING THEM AROUND SO THEY DON'T HAVE TO RENT A CAR, and then starts bringing up my recently deceased grandfather (who was my dad basically) saying that he was around so my mom should have money to cover the whole wedding so we can PAY FMIL!!!!

FI calls his mom to see where all of this is coming from and she basically says that she wants off of the loan and that FI should just stop making payments so that the bank will just take the car back.

FI reminds FMIL about the lease term and even lets her know that by our calculations, the car will be paid off at least a year sooner. He mentions that it is innapropriate to bring my family into anything and that I was very upset about this.
Then FMIL send me an "I'm sorry, it's not your fault the FI fell in love with a girl 700 miles away from his home."

So I thought we were done. UNTIL last night FMIL invites FBIL (who is always up for a fight) into the facebook convo and he writes a huge letter about how we shouldn't be ruining FMIL's credit because of the car and that she has two small grandchildren to worry about and how is she gonna pay for tuxes and dresses for FB and FS in law for the wedding? WE NEVER ASKED THAT!

I reply in the heat of the moment that our finances are not a family discussion and to kindly back off.
FBIL tells me that when I marry someone it is no longer about me and that I have only child syndrom. Uh...fuck you dude.
FI sees the messages and is PISSED. He ripped into FMIL and FBIL.

Guys, it is 5 weeks before the wedding. I am so pissed off, hurt, and don't even know what to do. FI is not talking to FMIL or FBIL. I am now coming up with the money to pay for the RD and have already sent a check to FMIL to reimburse for my bouquet. I just don't know what else to do at this point. Thanks for letting me go a little psycho here so I don't do it IRL.