No angst

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

Thanks! But I already finished that

It's popular so maybe you read it but mine is define the relationship

That was harder than I thought. Like a lot that are sweet actually have some kind of bitter taste at some point, or at least what I read. If this helps:

Kisses x kiss x kisses
Dasadanan
My guild mate next door
Behind the scenes scandal
Faded first love
All about lust (I read it quite a while ago so I hope it doesn't have angst and it's good cuz I don't remember much)

If you're up to a bit of angst and complexity but still happy ending and cute

The eve festival
Minority
Spinach bouquet

I'm currently reading don't lie and it has been sweet but I don't know if it won't have angst and is still not finished

Hope it helps

https://www.mangago.me/read-manga/haru_to_natsu_to_nacchan_to_aki_to_fuyu_to_boku/
And old fashioned cupcake by the same author

https://www.mangago.me/read-manga/here_and_there_and_us/
and its sequel
https://www.mangago.me/read-manga/achira_kochira_bokura_no_are_kara_to_kore_kara/
https://www.mangago.me/read-manga/moratte_kudasai/

Bro... Don't lie has angst and I wasn't prepareeeeee like they were so cute for a moment and then...

https://www.mangago.me/read-manga/nagahama_to_be_or_not_to_be/
https://www.mangago.me/read-manga/family_now_and_forever/