lockpeople

maybe... ?
https://www.mangago.me/read-manga/watashi_ga_koibito_ni_nareru_wake_naijan_muri_muri_muri_janakatta/
https://www.mangago.me/read-manga/run_away_with_me_girl/

https://www.mangago.me/read-manga/straight_girl_trap/
https://www.mangago.me/read-manga/teiji_ni_agaretara/
https://www.mangago.me/read-manga/still_sick/
https://www.mangago.me/read-manga/after_hours/
https://www.mangago.me/read-manga/tsukuritai_onna_to_tabetai_onna/
https://www.mangago.me/read-manga/2dk_g_pen_mezamashi_tokei/
https://www.mangago.me/read-manga/onna_tomodachi_to_kekkon_shitemita/
https://www.mangago.me/read-manga/level_one_dreamers/
https://www.mangago.me/read-manga/i_love_amy/
https://www.mangago.me/read-manga/shoujo_manga_protagonist_x_rival_san/
https://www.mangago.me/read-manga/bad_thinking_diary/
https://www.mangago.me/read-manga/itd_would_be_great_if_you_didnt_exist/
https://www.mangago.me/read-manga/i_decided_to_fake_a_marriage_with_my_junior_to_shut_my_parents_up/
https://www.mangago.me/read-manga/i_favor_the_villainess/
https://www.mangago.me/read-manga/run_away_with_me_girl/
https://www.mangago.me/read-manga/onna_doushi_to_ka_arienai_deshou_to_iiharu_onna_no_ko_wo_hyakunichi_kan_de_tetteiteki_ni_otosu_yuri_no_ohanashi/
https://www.mangago.me/read-manga/sorry_but_i_m_not_yuri/
https://www.mangago.me/read-manga/the_girlfriend_project/
https://www.mangago.me/read-manga/shinyuu_ni_sukina_hito_ga_dekitarashii/
https://www.mangago.me/read-manga/watashi_ga_koibito_ni_nareru_wake_naijan_muri_muri_muri_janakatta/ (harem that will possibly end in a polyamorous relationship)
https://www.mangago.me/read-manga/ring_my_bell/ (homophobia)
https://www.mangago.me/read-manga/futsuu_no_koitte_nani/ (internalised homophobia, love triangle)
https://www.mangago.me/read-manga/unrequited_love_skill/ (love triangle)
https://www.mangago.me/read-manga/even_if_it_was_just_once_i_regret_it/ (age gap)
https://www.mangago.me/read-manga/stop_fighting_go_to_bed_athrea_scans/ (adultery, dub-con)
https://www.mangago.me/read-manga/kono_koi_wa_hoshi_ni_wa_negawanai/ (love triangle - a guy and a girl are in love with the same girl)
https://www.mangago.me/read-manga/even_now_we_re_adults/ (adultery)
https://www.mangago.me/read-manga/this_love_that_won_t_reach/ (age gap, MC is in love with her sister-in-law; rushed and ambiguous ending)
https://www.mangago.me/read-manga/the_glass/ (features both lesbian and heterosexual couples)