Any similar stories like this, where the love interests accept the main character both as a guy and girl?
Yes there is one!"Fucked by My Bestfriend" it is (๑•ㅂ•)و✧
There's actually one manga which is quite similar to your description, but this one has more depth to its plot(no sex but ecchi) it's called "Boku Girl" really funny manga
Any similar stories like this, where the love interests accept the main character both as a guy and girl?