Student or Learner
Is it possible to say one another in the following?
I think for two, you should use each other.
ex)Sammy and Kelly fell in love with one another.
One another is a reciprocal pronoun. Both one another and each other are reciprocal pronouns.
Each other is used for two people.
One another is generally used for more than two people.
Sammy and Kelly are two people, so using each other would be the best choice. A native speaker would understand and might use both reciprocal pronouns when speaking, but grammatically each other is the correct answer.