In fairness, it could be a 1:1 or a 1:0 relationship. He's smarter and more social than her. His utility to her is astronomical, compared to what she could do by herself. On the other hand, she genuinely loves him and makes him happy and appreciated, and he wasn't gonna get that from many other people.

It's a win-win for them because you don't have relationships based on objective scores, they are all based on subjectivity and relativity.