So I'm the new guy at the office, My co-worker is like the famous/social girl in the office. Girls used to come to her for chatting/joking. now, they still do the same even with me around. they talk about their personal life. I pretend that I'm busy with something else not hearing them. so I stand as a guy in the background they don't care about. I'm really good socially, and have a good game. but this situations making me clueless. because the conversation I'm not included in. I think in this situation I lose my frame. Any suggestion?