Are you looking for a rom-com drama that has everything.....and I literally mean every plot device you have ever seen in a drama all wrapped up together? You have:

Rich CEO
Struggling artist
Cohabitation
Fake amnesia
Evil stepmother
Adoption
Inheritance battle
Accident
Corporate battles
Sibling rivalry
Childhood connection
Break-up
Suicide
Childhood trauma
Unresolved past
Attempted murder/kidnap
Hidden identity
PTSD
Multiple couples
Fake death
Fake paternity test
Evil enemy from the past seeking revenge
SML tries to break them apart
SFL tries to break them apart
Fake relationship
Dementia
Someone goes to jail
A stalker
Oh yeah...and the ML lead saves the day...surprise!

It's not well-blended but at least the lead couple is cute.