-Both ROMANCE MELODRAMAS by the same writer with EXCELLENT leads that are perfect together, GREAT CHEMISTRY and can act (Go Soo + Han Ye Seul & So Ji Sub + Im Soo Jung !)

-Both have strong/likeable female leads who are annoying at the beginning since they have a 2nd lead/male, but grows lovable

-Allthough both dramas are good, ISILY is better (10/10!)

DIFFERENCES:
-ISILY has a REVENGE element, no such in WISFC
-ISILY is MUCH more heart-breaking, especially the tragic childhood/background story of the male lead

-Both are very angst and tear-filled ROMANCE MELODRAMAS where leads know each other for years, and struggle to overcome obstacles in order to be together
-Both feature a class difference between leads
-Both have EXCELLENT CASTING & LEAD'S CHEMISTRY and they can act too. Casting for other characters is great too (Shout out to JO MIN SOO who plays male lead's mum in WISFC, AMAZING actress!!)
-Same structure: Both love stories start out in unsatisfying way/too fast/unbelievable. DON'T be discouraged by the starts of the loves, it gets REALLY shippable/more believable later on & they have EXCELLENT chemistry. Both have an ambiguous/mini ending type of episode some eps before ending that can be seen as ending if not satisfied with real ending (ep 11/16 of WISFC and ep 16/20 of LITFC)
-Both have strong female leads

-Both very underrated dramas
-Both are very sad/emotional, and thus only recommended to those who love sad stories (NOT for everybody!)

-Both have GREAT OSTs, that supports love story really well / makes you ship them more!

DIFFERENCES:
-WISFC is a korean drama, while LITFC is a chinese drama (which reminds me more of a kdrama! A cdrama for those who normally don't like cdrama. Also NO dubbing over their real voices in this cdrama!)

-Both are about an immortal female lead who falls in love with a mortal/human male lead
-Both are short: LFATM is 10 eps x 20 min, SITYO is 5 eps x 10 min.

Differences:
-LFATM has the added element of love counseling (female lead is a love counselor) & Music element (male lead is a rapper/singer)

-Similar kind of female lead, both sassy, colorful personality and both are some type of counselor (Love counselor in LoveAThousandMore and Psychic counselor in Madame Antoine)
-So both are about a female counselor who falls in love, concidentally both fall for their neighbor who they find irritating at the start
-Leads who are cynical about love, in LFATM it's the female lead that's cynical, in MA it's male lead
-Both have a good flow/ not too slow-paced/ keeps you hooked, not bored
-No irritating side characters, you care about the side characters stories as well /they're likable

Differences:
-The supernatural element in LFATM (female lead is immortal) is missing in MA. .....A.K.A love counselor uses her long immortal life in guiding others and is really immortal , psychic counselour is not really psychic but uses trickery to help others
-Psycholigical experiment and mental patients included in MA, none of it in LFATM
-Music element in LFATM (Male lead is a rapper/singer), no such thing in MA
-LFATM is 10 eps x 20 min webdrama, while MA is 16 eps x 1h full drama