So basically I and two of my friends since the past one year shared a very close bond. We always did everything together. Recently one of us starting talking to the senior , a lot. We have no problem with that. But the things started taking an unsual turn. We beileve that the person is exercising a negative influence on her. We have no problem with her spending tiime with the senior, but then she has stopped sleeping studying etc. thinking all the time about her and always talking about her to us. She hardly spends half an hour with us now in the entire day We have directly and indirectly talked to her about this. she gets all defensive whenever we bring up this topic. What can we do? I wonder if this is the end of our friendship.