Still committed to my 2D waifus...still committed to my 2D waifus...

Of course, this is also one of the components. After all, I need a person whom I would put first in my life, above all else, for whom I would gladly return home after a workday, rather than thinking about the many ways I could end my life. For whom I would want to strive to become better myself, and about whom I would want to care with exceptional sincerity in my heart and warmth in my soul.
But if all of this is not present, and I cannot experience such deep, romantic, and familial feelings, then there is not much point in such a relationship. As I sometimes like to say, a crane in the sky is better than a sparrow in the hand (it's better to have empty hands than a sparrow in them).