Alina and Polina

You had a friend, Alina. You loved spending time together; you were best friends. Until Polina came along. She immediately started sucking up to Alina, which meant she spent less time with you. Sometimes she even forgot about you altogether. Polina didn't respect you, and you didn't like that. You decided to have a serious conversation with them, like, "Why are you ignoring me? You don't love me, etc."
Polina - I'm sorry, but you're the odd one out in this friendship.
You looked at Alina, hoping she would stop Polina and say something like, "What's wrong with you, my little darling, don't tell her, you know?"
but the most painful thing is that she didn't answer anything, it was more painful than a blow, you didn't stand there for long, soon you left and said that you wouldn't bother them.
A week later, Alina ignored you, didn't respond to text messages, and you didn't see each other. You felt really bad.
One evening you were walking down the street, it was very dark, you saw Alina and Polina saying goodbye, hugging and parting, just as Polina was walking in your direction, but she was very far away and you hid behind the bushes. What did you do?