For starters- going mainstream would be ideal..........
19 days
Love tractor
My suggestion would always be ---- Trapping the foxy doctor https://www.mangago.me/read-manga/trapping_the_foxy_doctor/
Our sunny days
Or just starting of funny without bl like - Nan Hao and Shang Feng. OR. Papa wolf and puppy---- would be a guarantee manga reader and then slowly to BLs later on
But u want a solid irresistible bl manga........No more Eurydice--- is too good https://www.mangago.me/read-manga/no_more_eurydice/

Ive been trying to get my friend into reading bl manga/manga and i FINALLY got her to accept but on the condition that if she doesnt like the first rec i give her then she'll never try it again- pls help me find a good manga to reccomend T^T
her fav genres are comedy and psychological!