Abandoning your family and blame

Hello,
Thes are probably ridiculous questions.
My husband left my baby and I completely out of the blue. He claimed that my shock was unfounded as our relationship had been bad for months. However the night before he left he was telling me he loved me and planning for the future.
I guess what I'm asking is, do narcissists act impulsively? Do they know the reasoning behind their actions and will they ever be truthful?
Anybody experienced a narcissist become jealous of a child? My husbands mother was a narcissist, could he have been jealous of the love I showed our daughter?
anyone have any experience divorcing and co-parenting with a narcissist?
My ex refuses to speak at all and I'm struggling to cope without answers
Many thanks

What interesting questions.

do narcissists act impulsively?

Impulsivity is not a diagnostic trait or hallmark of NPD. It is, however, a diagnostic feature of BPD and ASPD. That's not to say narcissists can't be impulsive, as some are, it just isn't a defining characteristic of the disorder and it isn't typical.

Aprilmay2017 wrote:Do they know the reasoning behind their actions and will they ever be truthful?

Lack of insight is so common and pervasive in NPD that it's included in the alternate diagnostic model in Section III of the DSM-5.

Self-direction: Goal setting based on gaining approval from others; personal standards unreasonably high in order to see oneself as exceptional, or too low based on a sense of entitlement; often unaware of own motivations.

Aprilmay2017 wrote:Anybody experienced a narcissist become jealous of a child?

Even people who aren't narcissists have been known to be jealous of children. As ridiculous as it is, you don't need a personality disorder to be this selfish.

Has he been clinically diagnosed? What qualifies your diagnosis of him? Are you familiar with the diagnostic criteria, the alternative diagnostic criteria, and differential diagnosis required to diagnose this disorder?

In a word, would you describe his overall personality style as coquettish, callous, grandiose, or needy? This is important because calling him a "narcissist" and treating him like a "narcissist" when he may in fact be borderline or something else will only cause you more problems down the road.