I love Sweet 18, and hopefully I can give you something that is similar and not recent.
Goong (arranged marriage, cold ML, clumsy FL in love with ML)
Ashi Girl (time traveling silly FL chases after a young prince she fell for, very cute)
Playful Kiss (FL has a crush on ML, and because of other reasons they end up living together)
These don't fit the criteria perfectly, but I found them fun:
Nigeru wa Haji da ga Yaku ni Tatsu (desperate for a job, any, she becomes a housekeeper and ends up doing a contract marriage...)
Splash Splash LOVE (girl travels back in time and meets the joseon king)
Koi wa Tsuzuku yo Doko Made mo (not a perfect match, but a love sick young girl that becomes a nurse to chase after a doctor guy)
Full House (forced cohabitation / contract marriage)
Coffee Prince (FL pretends to be a guy because of a misunderstanding, falls in love with ML that has no clue FL is a she)