cohabidating

a.k.a. cohabidate, cohabidated, cohabi-dating

When two people are newly dating and move in together, it usually refers to a young couple who do it for financial reasons. In other words, it's two people who would rather save money and live together than wait longer to see if the relationship works. For example, "I know we only met a month ago, but it makes more sense financially for us to cohabidate."