Can anyone find me this bl, where both sleep together but the top said not to catch feelin...

I've seen this trop a lot i hope you mean this one

https://www.mangago.me/read-manga/nice_to_see_you/

https://www.mangago.me/read-manga/i_m_the_editor_of_the_person_i_killed_in_a_past_life/

https://www.mangago.me/read-manga/is_it_okay_for_a_murderer_to_be_an_idol/

https://www.mangago.me/read-manga/scandalous_wedding/

Yup, it is the one

Thankyouuu too