I'm not sure wether or not he's the uke in this one. There hasn't been any smut scenes yet.
https://www.mangago.zone/read-manga/after_a_meal/
This one kinda fits the description, i think (?)
https://www.mangago.zone/read-manga/captivated_by_the_moonlight/
https://www.mangago.zone/read-manga/to_me_who_doesn_t_love_you_team_hazama/
He doesn't get rejected, but the seme is keeping things strictly sexual
https://www.mangago.zone/read-manga/daily_part_time_job/
https://www.mangago.zone/read-manga/flip_the_script/
These might not be exactly what you wanted, but I think they're close enough
It's okie! I'll try to read em' but I think I have to go to sleep naaa thank youuuu
BL RECOMMENDATION like this kind of plot please
Uke likes seme but seme thinks uke is confusing his feelings from gratefulness or admiration
But uke is firm with his feelings but still gets rejected by seme