People develop addictions to shield themselves from intolerably painful feelings. An addiction always creates harmful, often ignored consequences. Only when the addiction becomes unmanageable will people do something about it.
Love addicts spend much time, effort on a person to whom they are addicted. Love addicts value this person above themselves, and their focus on the beloved other often is obsessive.
This behavior results in love addicts neglecting to care for themselves in a variety of ways, in essence abandoning important aspects of their lives and well-being to stay connected to the object of their affections.