Serial monogamist

[Justin Bieber]

function: noun
one who spends as little time as possible being single, moving from the end of one relationship to the beginning of a new relationship as quickly as possible
although the relationships in which many serial monogamists find themselves are also often short lived, the defining aspect of serial monogamy is the desire and ability to enter new relationships very quickly, thus abbreviating any period of single life during which the serial monogamist may begin to ask questions of an existential nature

[Tanya Shivari]

A descriptor for a person who has commitment issues but does not engage in cheating or infidelity. A serial monogamist likes the emotional and physical intimacy of relationships and therefore seeks partners who want a longterm romantic relationship. A serial monogamist may or may not warn their partner about their fear of commitment. (Often the partners foolishly believe they will be able to change this about the serial monogamist.)

The relationship may be short-lived or it may last a few months to years, however the serial monogamist is always holding back and if the other partner in the romance pushes at all, the serial monogamist will end the relationship swiftly and often without emotion.

[Couch Potatoe]

A person who cant stand not being with someone and so goes headlong from one relationship to another without any break in between.

[Tanya Shivari]

Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically dont take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.

[Tanya Shivari]

an individual who dates only one person at a time (and is faithful to them at that time)

[Little_Girl]

A man or woman who as extremely short-term relationships because they seem to like to put others in pain or because their parents messed them up in childhood