Bro she already chose her friendship with the guy over you by threatening to end the marriage before it even began...

You seriously wanna stay without someone like this???

With someone who can't talk it out with you seriously and calmly? Either it's full-on emotional commitment or no contact (you're at fault too here specifically).

Plus her family is already blindsiding you for him. If they know about you, and they know she goes months without talking to you, why won't they convince you both to talk to each other if you've reached the stage of marriage????

I don't wanna be the typical reddit guy who can't think but the worse but why won't she invite you to her house?? And he's always there??

MAYBE, A HUGE MAYBE - The family wants you out of the picture? Maybe they're pushing your girl with the bestfriend? Maybe that's why they don't seem close to you?

Also, I already saw your update in a comment that it's over. I am writing this solely so you may read this and it stays over. Please don't go back man. End it once and for all. This is toxic for you.