Supply

Ok so in my readings it keeps saying that if a narcissist is short on supply, they will seek it out with whomever they can...ok so with that said, then why do they cheat? If they have ample supply from their spouse or partner....in my case I was his live in gf...can him so much attention and affection and he still felt the need to go online dating sites and meet women...

So really the question is why go looking for other relationships if they are getting supply from the relationship they are in?

FYI I'm on day 30 of NC....!!!!!!