These are all GLs:
https://www.mangago.zone/read-manga/the_guy_she_was_interested_in_wasn_t_a_guy_at_all/
https://www.mangago.zone/read-manga/handsome_girl_and_sheltered_girl/
https://www.mangago.zone/read-manga/fall_in_love_with_the_empress_zephyr_scans/
https://www.mangago.zone/read-manga/itsuwari_no_marigold/
https://www.mangago.zone/read-manga/prince_prince/
https://www.mangago.zone/read-manga/unaware_his_majesty_is_a_girl/
https://www.mangago.zone/read-manga/flower_flower/
https://www.mangago.zone/read-manga/the_noble_lady_on_the_edge_of_the_cliff_wants_to_make_the_dark_knight_fall_in_love/
https://www.mangago.zone/read-manga/kiraware_majo_reijou_to_dansou_ouji_no_kon_yaku/
https://www.mangago.zone/read-manga/the_playgirl_and_the_prince/
https://www.mangago.zone/read-manga/himitsu_no_hanazono/
https://www.mangago.zone/read-manga/the_princess_is_now_the_duke/
https://www.mangago.zone/read-manga/bing_jiao_meimei_zhi_xiang_rang_wo_qifu_ta/ (side couple)
Guys please, please, I want manhwa with crossdressing. A bl with the guy cross dressing a girl and a sl or gl with girl cross dressing a guy. Pls pls pls!!