Feel-good Dramas

• Go Ho's Starry Night
  • A reverse  harem office romcom
• Hi! School - Love On
  • A reverse harem fantasy / school romcom with cohabitation but it does also have amnesia
• You're Beautiful
  • A reverse harem gender-bender romcom with cohabitation
  • It's from 2009 so it's a little dated
• Sungkyunkwan Scandal
  • A love triangle romcom / gender bender / historical school drama 
  • Cohabitation (the FL is roommates with the two main guys that fall for her)
  • The actress who plays the FL is the main actress from Healer
• Because This is My First Life
  • A contract relationship drama that is arguably reverse harem and that definitely has cohabitation
• I Need Romance 3
  • Love triangle + cohabitation
• I Hear Your Voice
  • Love triangle + cohabitation
  • Does include amnesia
  • Lee Jong Suk from While You Were Sleeping and Pinocchio is the ML
• Wednesday 3:30 p.m.
  • Love triangle + cohabitation
  • However there is a second female lead and she's quite annoying
• Oh My Venus
  • There's sort of a love triangle (I recommend ignoring the second couple)
  • Cohabitation (the FL lives with the ML and his two close friends are often there too)
• Fight For My Way
  • The leads live right across from one another and often spend time at each other's places
  • A friends to lovers romcom with a love triangle (there is a female lead who's annoying but she doesn't stay for too, too long)
• W
  • A mix of action, sci-fi, thriller, crime, melo, and rom com
  • There's some cohabitation and a fake marriage
  • Lee Jong Suk from While You Were Sleeping and Pinocchio is the ML
• Dream High
  • Love triangle school drama with some cohabitation
  • There is a second female lead
• It's Okay, That's Love
  • Cohabitation and a bit of a love triangle
  • Deals with some more mature themes like mental illness
  • It's kind of a slightly more mature version of Kill Me Heal Me
  • The FL is the main actress from the Master's Sun
• Jealousy Incarnate
  • Love triangle drama with some cohabitation
  • Same FL mentioned above from the Master's Sun
• Another Miss Oh
  • Love triangle rom com with a bit of melodrama and a bit of fantasy / sci-fi
  • The FL rents a room in the ML's house and a door connects their rooms
  • There is a second female lead
• To The Beautiful You
  • School / genderbender romcom with cohabitation and a love triangle
• Personal Taste
  • Love triangle romcom with cohabitation
  • Lee Min Ho from Heirs is the ML
• Love in the Moonlight
  • Historical / genderbender drama that is part romcom and part melodrama with a love triangle
• Weightlifting Fairy Kim Bok Joo
  • Romcom about student athletes that live on the same university campus
  • There is a second female lead but she has a very minor role
• Something About 1 Percent
  • A contract relationship drama with some cohabitation and a bit of a love triangle

If you're open to dramas from other countries, these are cohabitation dramas with love triangles:

• Attention, Love!
  • The ML has partial amnesia / limited memories of his childhood
• Bromance
  • They don't actually live together but the drama finds an excuse for them to share a bed on several occasions 
  • A secondary character has amnesia
• Kimi wa Petto
• Good Morning Call
• My Amazing Boyfriend

• Strongest Deliveryman (2017) – romance/drama/comedy/slice of life

• Weightlifting Fairy Kim Bok Joo (2016) – comedy/drama/romance/sport

This is a little bit different to the types of shows that you've watched I think, but it may interest you It's actually one of my favourites because it's quite different and unique in comparison to other romantic K-Dramas – the storyline and relationship between characters is hardcore and well thought out, and there is a variety of different genres which are all perfectly balanced throughout the story :)

• Tomorrow with You (2017) – drama/comedy/romance/time travel

The start may seem a little boring and slow paced, but trust me, it is definitely worth to watch until the end!

Happy watching!!!