I have friends( we are 6 in group) who get along with me well.Because we're irregular college students, we are separated on mondays and wednesdays and complete during tuesdays , thursdays and fridays. Me and my two other friends , who are also part of the group, would meet every monday and wednesday for our management class.We are separated from each other because our professor assigned a seat plan for the class.(He is kinda strict). My friend would tell stories to my other friend while Im just behind their backs listening to what she is saying.The two are comfortable talking about matters (such as crushes , favorite songs , etc) with one another.They would also share their secrets with one another.This friend of mine never even bothered to share her secret with me but she is willing to ask for my help whenever she encounters a difficult question from assignment.She has also helped me how to solve problems .Dont get me wrong, we would also talk about important matters such as assignments, lessons discussed by a professor and others but that's just it. It seems like theyre indifferent to me.The same goes for her friend ( also my friend) and our other friends in the group. I am introvert by nature and I make an effort to catch up with them but still , I feel as if I am only their acquaintance, not a friend.Any advice?