Are we ever alone?

I surmise I may be one of those who never settle down with a forever, life partner. I wonder, if it's even possible. Not to sound like a broken hearted skeptic... But if were constantly changing, growing - how do we change in such a way to match or mesh with our partners changes? We can change in ways the conflict greatly. I guess it depends on how powerful the similarities are. I suppose it is possible. It will be later in the game for me. This I know. I'm okay with this.