Responses
https://www.mangago.zone/read-manga/a_way_to_protect_you_sweetheart/ It's a manhwa tho
https://www.mangago.zone/read-manga/kimi_wa_petto/
The ML likes the FL a lot but hides his feelings because he doesn’t think it’s mutual (and she gets into a relationship)
The male lead loves female lead a lot, but try to hide his feelings for her in the manga either because he is afraid of how she would react. Or some other reason.
Some examples like Vampire Knight or like the manhua: getting married is not easy.