You might look up aspergers syndrome and see if that looks familiar. "Normals" actually have cells in their brains that tell them to mirror the emotional behavior of the people around them while aspies tend to be out of phase. Consider it an evolutionary tactic so that a tribe would have one guy left to throw a rope when the rest of the tribe went running off a cliff.

Ways of dealing with this socially are joining groups where the focus is co-ordianted action of two or more folks. Martial arts and ballroom dancing come to mind. In both of these cases newcomers are expected to have two left feet and as long as you're clean, polite and cheerful about your own errors you will be welcomed.

For some people it can take months to feel comfortable enough with a new group that you start working with their rythms so don't be disappointed if people don't invite you to hang out right away. Enjoy activities for what they are and try not to have expectations about what happens outside of the structured activity.