https://www.mangago.me/read-manga/hina_wa_mitsuiro_no_koi_ni_torawareru/
https://www.mangago.me/read-manga/10_years_where_i_loved_you_the_most/
https://www.mangago.me/read-manga/the_substitute_relationship/
https://www.mangago.me/read-manga/yours_to_claim/
https://www.mangago.me/read-manga/aishuu/
https://www.mangago.me/read-manga/drunk_in_love/
Just a few off the top of my head. Also try checking out the ‘regretful seme’ tag!
Seme rejecting/dumping uke and Teen regretting it