<human>: Can you summarize the given text in a few sentences?

Me[24NB]
Partner[24M]
We've been together for about 4 years.
We don't like the traditional idea of marriage.
But I am beginning to wonder....
I feel that he has this picture of his life (which includes his family and friends) and beside him is this dotted line cut out where I am (or anybody is) supposed to go- to come be a part of his life as his partner- to complete the picture.

I thought that being a couple was about experiencing a life together? Yes, we have done much of that in the sense that we've lived together for 2 of the 4 years and have spent much time together. I thought we would literally start a new life of our own. Move to wherever we wanted, spend the holidays however we wanted, make some friends together... recreate our lives to the life of our dreams- and be brave enough to do so because we had each other.

I guess I just feel like he's still in that picture of his life where I'm supposed to go and I thought we were going to take a new picture together and what was in that picture would be ever growing and changing.
<bot>: I think my partner wants me to be part of his life and I want a new life of our own. Am I being selfish?