There was this one anime I forgot the name but it was a love triangle between a guy and two girls. One girl was a child hood crush that the MC absolutely loved. The other girl was more of a country girl who moved into Tokyo and the guy and this girl became boyfriend and girlfriend and the other girl came and ruined all of it and then the guy and the childhood crush get together leaving the girl from the country to stay alone until the guy comes back to her.
I really need to find the name because I legit a single tear running down my face.