A lot of people who think that they “love themselves” just really love a very particular idea (or set of ideas) they have about themselves. For instance: they love themselves because they’re fit, or because they have a certain job, or because their interests can easily be defined on a 140-character bio. This is not real love. This is conditional acceptance on which their egos thrive. The reason why people who love just the idea of themselves usually struggle in relationships is because they have yet to explore who they genuinely are (for fear of how much of their lives will have to collapse to do so) and so they choose relationships based on the idea, rather than the reality.