It is the best to be ourselves in a social situation.I am an introvert too.But can hold a good conversation with a person on various topics.It happened a lot of times that I sit in a corner silently ,then someone approaches and we end up having a long and interesting talk.Then people tell me later that the other person I was chatting with is an arrogant person and hard to communicate with.I am surprised by others opinion of this interesting and knowledgeable person.You Do not have to give importance to other's opinion of you.Just be in your comfort zone.You will surely attract like-minded people in a social situation.