So, I my wife came back from her sisters today, checked her phone, sighed a lot, and than told me she is filing for divorce.

My guess is my BIL told her I forwarded her text meant for him to my sister.

Now what?

M 17 years
3 kids
EA start 2010
ILYBNILWY 1/2014
PA 1/2016
Bomb drop 2/2016
Renig on Bomb drop 4/2016
Living as roommates, EA continues