Love in the World is Not the Same as Love in Christ's Church
To the World, love is not sacrificial in the way it is for Christians. Spending themselves on the other shores up their need for validation, and in some cases where willpower is taken as the prime part of the soul, the desire for the other is kept with an expectation of trustful solidarity that seems to approach love as Christians know it, but the will dominates even that pseudo-commitment, so that one's own mere plans ultimately take precidence.
To the World, love is not the giving of oneself, including the will and the whole soul, to the other, and the other giving the whole self to the first, so that, even if they are separated for a reason outside the control of either, they will still have that connection, and no amount of mere long-term plans can shake them apart.
We Christians are a family of love, which the World has failed to replicate.