I saw that someone already suggested some BL ones so here some straight ones
https://www.mangago.me/read-manga/honey_blood_lee_narae/
https://www.mangago.me/read-manga/the_maid_and_the_vampire/
https://www.mangago.me/read-manga/untouchable_massstar/
https://www.mangago.me/read-manga/monster_idols/
https://www.mangago.me/read-manga/orange_marmalade/
https://www.mangago.me/read-manga/my_secret_master/
https://www.mangago.me/read-manga/blood_type_love/
https://www.mangago.me/read-manga/she_is_a_vampire/
webtoons where there’s vampire included