1. When roommates truly love living together OR 2. when roommates fall in love.
1. Emma and Catherine are in a roomiemance- they are roommates who love living together.

2. Jadea and Daniel had a roomiemance- they met each other when they both moved in with a mutual friend. Jadea and Daniel fell in love while assembling IKEA furniture.
by emmerlou May 25, 2011
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