Please help - urgent...

I just found out she has been having an emotional affair that turned physical last night. Her mum also found out at the same time.

I'm devastated - please what do I do?

W 39 Me 33 M 9yrs
8 year old Son
ILYBINILWY - Dec 12
W moved out - Jan 2013
OM - Jan 2013
I file for D - May 2013