Where they go? Some places which you hated like pubs, KTV? If
yes, just tell them. I have told my friends I won't go to these
places, so if they intend to, they will leave me out. If they are
going to restaurants, coffee shops, etc, just go. No harm will be
done. Besides, going there to just drink coffee won't kill you.
Take it as a chance to socialize, to know them. Don't stay at home
and rot. Not good for health. 
