Your sitch sounds just like mine. Two young kids, me oblivious to anything wrong, about same ages, an EA/PA w/coworker, huge personality changes, ugh. Only difference is that my wife left the house right after the BD and now won't talk to me or see me even for kid swaps.
M:36 W:37 T: 15 M:11 S6 D5 BD: 8/10/14 IDLY: 8/12/14 S: 8/13/14 (she left, I stayed w/ kids) D Mentioned: 10/15/14 Confronted about OM: 10/15/14 EA: ~4/13 PA: ~10/13 She filed: 8/15 (not final)