We project our hopes and expectations onto one person.
Only if and/or when we become exclusively with the object of our desire is when we start to fall in love with that person for who they are.
This goes both ways I think, we can be hurt and disappointed when that person doesn’t live up to our expectations.
Can we move past that though?
Love takes effort, time, trust, and patience. If you truly love someone then they’re worth it Whether they live up to your expectations or not.