I would like to rec snowpiercer has a wlw ship but one is a cop. is a white/asian couple tho and the asian woman (jinju) is a Scientist/chef and the white woman (Bess) is/was a cop (now in the train she is a guard) it has its saving my gf vibe too. they are from 2 social classes (cop is a 3rd classs the scientist is part of the 2 class) as character they have their own storylines, and they are kinda cute tbh the show itself is really interesting i must say, check out bess x jinju