I know the feeling, a conspiracy that on occasion actually has been real.
UNPex is a major control person, I just get an uneasy feeling about all of this.
I would celebrate when my BPDw was affair'ing during the separation, the signs were obvious, pet boarding, travel, etc., AND, she would do stuff like this, zone out from kids, be nice, etc. The problem is she can't seem to affair out of the marriage longer than a month, so she returns to normal.
I suspect your ex is probably dating, or mood swinging, oh, or he's trying to negotiate with you and play nice, if there is anything to negotiate at the present.