Looking For Manga

Hi everyone,

I'm looking for a shoujo manga I read a long time ago. I'm sure it wasn't that good but I want to read it again. I think there were only about 3-4 chapters. I don't remember much, just that the guy love interest had the ring of the girl he liked or something, I think it was the school infirmary teacher. Afterwards he fell in love with the MC and I think there was a scene where they go to the pool or the beach and he was jealous.

Sorry that's not much to go on but can't remember much,

Thank you

I read a manga where a guy caretaker was hired for his feminine name. He left his girlfriend and went to the family who hired him. They thought he was a girl but since he was a guy, they didnt want to hire him anymore. Anyway, the guy has sex with both sisters living in the house while the crippled mother doesn't know. Sounds familiar?