Relationship falling apart

My relationship is falling apart 10 days before we are supposed to be getting married.

His mom has always managed to get in between our relationship because he’s a “mommas boy” (she treats him like he’s 5)

I choose to distance myself from her and from us a little bit because we have all been on edge for a while.

I now have video of him on the phone with his mom talking major shit and her asking are you sure you wanna be with her?

We’ve been together for almost 8 years and our lives are sooo entangled I have no clue what to do…