While in the west love is seen as a must do thing, many cultures such as Buddhism see love as a form of attachment to the real world and a hindrance to achieving enlightenment. Even in the west there are several types of love each with their own entanglement:
Add to this feelings like loyalty and patriotism which are closely related to love and the problem grows.
However the lack of love in a person for others would generally fall into one of two camps:
A person who loves to sleep or a person who has an obsession with bed rest is called a "CLINOMANIAC."
phines
Shakespearean...?
A person who loves to learn is often called a "curious" or "inquisitive" individual. Some may also refer to them as a "lifelong learner" or simply a "knowledge seeker."
Wife..
romantic
A person who loves to eat is commonly referred to as a "foodie" or a "gourmet."
A patriot.
Cartophile
A hairstylist.
Lonely
Gardner