Im in a friendgroup of 5 in school. We all get along very well except me and one friend, lets call them G. We all started high school last year and in the beginning me and G were really good friends, but suddenly after winter break G was extremely cold towards me and barely talked with me. I thought it was weird and i messaged G if i had done anything or if something had happened and G responded with that they dont like how I act sometimes and that we would talk about it next day in school. So when school starts next day G comes to class and i think we were going to talk about what they didnt like but we didnt that day. A week after i try to talk about it but G got really annoyed and said “Its not a big deal” very angrily. Fast forward to last month and suddenly everytime i talk to one of our friends G suddenly becomes completly quiet and doesnt talk until I have stopped talking to our friends. Also somedays G can talk to me so much and then the next day they dont talk to me again. Now I feel like how G feels in school is completly based on if i talk to our mutual friends and its starting to annoy me and I dont know what to do! Please help me!