Learned my husband is a narcissist

I’ve been married to my husband for about 5 months. Been together a total of a year and a half.

More and more as our marriage goes on we have been having more and more issues. I’ve noticed a overall change with anger and entitlement since the marriage.

One of the main issues he’s just not happy and wants a hobby and wants to spend money on things that make him happy when we are very limited on funds.

I have looked this up on google with his symptoms and he is a dead match to a narcissist.

He refuses to talk to anyone. He refuses to change. He says “Maybe I’m just not meant to be in a relationship.”

I have two options..

I could of course choose to leave and start a new.

Or I could find techniques on how to live with a Narcissist which I’m sure will involve me inflating his ego and self esteem all the time.

What would you do?