Omg fr but I guess it's because of the same trope lol
Pretend relationship/contractual relationship to love but make it that the uke realizes his feelings first, seme be like: "you really think you have a chance with me?", uke encounters a tragedy that makes them pull away from the seme because of the hurt from rejection + problems, then seme realizes they were actually in love and tries to chase the uke.
Similar to this is the "wife chasing crematorium" genre

Reminds me of limited run! Anticipating more angst & yearning in s3