Jesse and Alicia just moved in together after dating rather seriously for two years. They are seriously considering getting married but want to live together before making a final commitment. Their living arrangement would be called .

dating cohabitation

Explanation:

After 2 year Jesse and Alicia just move together as dating cohabitation of living arrangement because Cohabitation is an arrangement in which two or more unmarried people live together. They often engage in romantic or sexual intimacy on a long-term or permanent basis.

Such systems have been common in Western countries since the late 20th century, due to changing social views, especially regarding marriage, gender roles and religion.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.