Are You the One

Both these dramas show the male lead as a military leader who is part of the imperial family. Both MLs start off suspicious of the female lead and stays by their side to find out information. In both dramas, the male lead establishes living arrangements that keeps them close to the female lead. In Both leads are smart and work almost independently but still together. They both have different agendas but have respect for the choices of the other. In both dramas the ML has a hidden identity from the FL - at least in first part of drama.

Trust me on this. Female leads are both entrepreneurs who hate being walked all over... Both MLs fall first and fall hard! They both struggle with class differences too, just trust me and watch.

Smart and business-savvy female lead. Both FL's have calm temperament and approach their problem and family matters/concerns with a composed attitude. Both are also have good relationship with their grandfather's. The male leads are both dependable men and apparently common with the double identity trope. The ML's hold high positions in society but have a complicated distant connection to the palace/imperial family. In short, both dramas are about, double identities (male lead) and business/merchants (female lead).

In both dramas FL and ML are rivals. FL lost her memory and found by ML. In AYTO, ML lied about their relationship

~ML are strong, smart and cunning
~FL are strong, smart, cunning and calculative
~Both ML are YOUNG LORD and FL is their enemy

This is very similar… everything is very similar if you liked Serendipity you will definitely enjoy Are You the One more

Both dramas are
- chinese historical dramas
- arranged marriage
- strong and capable male leads
- cute female leads
- wonderful chemistry
- great pairing

Both are ancient costume dramas starring Zhang Wan Yi as MLs. Both have hidden identities of main characters and some interesting premises.

Identical in main plot: Female lead loses memories, male lead pretends to be her romantic partner for revenge based reasons. Both parties fall in love along the way.

Both are ancient costume dramas starring Zhang Wan Yi as MLs. Both have hidden identities of main characters, manipulation and some interesting premises.

From same novel writer
Strong ML, Strong FL
Let's say both have writers same writing style and it's more focosed in Main CP's story than extra thing.
ML in both is prince

both have
- sweet romance
- nice chemistry
- melancholic / mild angst
- hard to coax FL ( ML has to pursue FL pretty hard )
- strong FL
- slight comedy
- happy endings

difference
- TFF , FL is hard to coax cause tragic backstory while AYTO FL is deceived by ML so hard to coax.

Both are ancient costume dramas starring Zhang Wan Yi as MLs. Both have hidden identities of main characters, mystery and some interesting premises.

These two dramas are
- ancient costume dramas
- main leads are married to each other for a reason at first
- developing feelings for each other
- the main couple stay strong together in hardships

These two dramas have
- main couple as husband and wife and new spouses relationship
- main couple stay strong together in hardships and struggles