I need somebody who can balance me

I need somebody in my life who can balance me kind of like light and darkness to keep me from going to dark but I'm not trying to go totally Boy Scout. On the other hand I also need somebody who knows how to love fiercely but it's not controlling. I need somebody who is loyal and does not seek to change me only to better me. There is a big difference. I need somebody who I can build with that doesn't want it already built so they can move in and it is a turn key home . The type of person who it does not matter to what we have and don't have originally because we will build it together just like we were meant to enjoy it together Why is it that every time I become happy that I found a relationship they end up trying to change me to mold me like a clay pot not being satisfied with the person they have. I am a person not an art project