I can't remember the name of this dram for the life of me. Someone please help me out.

The Fl is older than the ML. She has this "dating app" and she decides to test it out herself. As for the ML. He looks like a playboy, and has this girl that is veryy attached to him. Anyway, he was made to come help at the FLs company. He even ends up living next door to the FL. ( I think? if I remember right.)

He decides to help the FL win over the guy she likes.. (I think he's a boss of some sort??) and he ends up falling for her.

p.s. ( I think it's a Chinese drama, but it could be Korean as well.)

Anyways, much help would be appreciated. Thank you!

Wow that was quick!  Yes! Thank you that's the one.