- Bad guys
- Liar Game
- Lives of Omission
- Punch (still watching this)
As other people have mentioned, a love story is in almost every drama, not only romcoms, even if it's isn't the main focus.
Series that have a love story in the plot, but are about other things and are worth watching:
- I hear your voice
- You are all surrounded
You could also watch The Lost Tomb. It's bubblegum for the brain, but VERY entertaining. No love story. I had a great time watching it.