this or that (drama tropes edition)

ML who had one-sided love to FL

both mains experienced the same trauma but don't remember each other anymore or both mains lost a parent in the past

Both are single parents

Love Triangle or Love Square

Living Together

Pets or No pets

ML and FL who just met each other

Cop  duo or Criminal Duo

Strong FL

Police or law drama

zombie

age gap or same age main couple