Could they be hiding behind their "mask" and projecting how they feel about themselves onto you?
It fits with those quotes you just put up Think.
They may well be, but I don't think they know they are doing it.
I think it is all about resentment and blame. They are not happy and they blame it on their spouse (us). If we are unconditionally loving then they feel pain (guilt, unloveable) which they project onto us as blame. If we show them the consequences of their leaving the M, then they feel pain (abandoned, unloveable), which they blame on us.
Me 42, W 39, S8, S6, S2 M 11y, A & ILYBNILWY 11/08 Walking away from a bad situation.