I know these specifically have a lot of pet names:
https://www.mangago.zone/read-manga/4_week_lover/
https://www.mangago.zone/read-manga/private_scandal/
And these are so sweet they make me sick:
https://www.mangago.zone/read-manga/grieving_you/
https://www.mangago.zone/read-manga/snow_fairy/
https://www.mangago.zone/read-manga/boku_no_omawarisan/
https://www.mangago.zone/read-manga/koi_ga_ochitara/
https://www.mangago.zone/read-manga/given/
https://www.mangago.zone/read-manga/unintentional_love_story/
https://www.mangago.zone/read-manga/dekoboko_sugar_days/
https://www.mangago.zone/read-manga/barefoot_angel/
https://www.mangago.zone/read-manga/chameleon_wa_tenohira_ni_koi_wo_suru/
https://www.mangago.zone/read-manga/sketch_1/
any bls where the ML loves MC a bunch and calls them names like princess and sweetie plzzzz sick and tired of these toxic ml stories