meeting new people

I recently visited one of my friends i hadnt seen in awhile at iowa state. He introduced me to alot of new people and we instantly clicked and became friends. I always hear alot of people talking about how hard it is for them to make friends but for some reason with me it is the exact opposite. Every where i go i can instantly meet people and become friends with them and i do not know how i do it. When it comes to stuff like gettin up and talking in front of alot of people for presentation or in church it is so hard for me to talk, but when it comes to me making new friends and talking to them i have no problems doing it. I have a loud and deep voice which may be good for speaking but when talking in front of just a small room of people i be come nervous. I wish i knew why i was so nervous because i played football and basketball games in front of large crowds of people with out being nervous but when it comes to speaking its a whole differnt story.