Uhh how about uhm it's a manga I'm looking for 2 but it's really good. If your ok with omega and alpha and Yaoi that is
it's just I forgot the name...!
i've a list for bl enemies to lovers, shounen ai included
http://www.mangago.me/home/mangalist/1002089/
this one especially is enemies to friends to lovers and slow burn
http://www.mangago.me/read-manga/a_shoulder_to_cry_on/
HOLD On...IFOUNDIT. Go check out Love Shuttle
Jazz for two
shounen ai / shoujos with enemies to (maybe friends to) lovers???? no rape and savior complexes please,,, just a love story where they were enemies at first, and started developing feelings