Dude...for a really smart guy , yer in some really deep shit.
Yep we all have abandonment issues, and if Mag is cool with you bangin' yer ex, then her trigger may be something even more obscure, or she just don't give a shit...
Dunno bro...as controlling, power-hungry and territorial as most women are, to have one feighning indifferance is scary... Hows yer Ex feel about Mag ?Why's she back again if you dumped her that hard before ? She got a score to settle ? Stay real cool, and keep yer head on a swivel, in case one of them starts bakeing cookies with extra ingredients if you know what I mean...