How fulfilled are you supposed to be in a long term relationship?

Kardilian

My relationship is only 10 months... and it's not a bad relationship... but it feels like the honeymoon phase is over already, and I've never gotten this far in a relationship...

I just want to know what I'm supposed to do in a relationship to make it better, or how fulfilled and satisfied I should be? I know I need to fulfill myself or whatever, but how much is my partner supposed to meet my needs?

My partner is so kind and he isn't doing anything wrong... I think personality differences are starting to make me feel like this relationship is "just ok" across the board- even though there are good things...

Help? :(