well that's a new one to me. "unfollowed" on twitter. must be the same as "unfriended" on face book. when I was your age it was "crossed out" from my little black book.
Someone said to me recently, you only ever need three good friends your entire life. I don't know how true that is, but over the years people come and go. Real friends will always be there no matter which way you go.
Worry about number 1. If 'freinds' cannot support you not drinking and partying- heck with em.
Do what's right for you - no-one else.
Glad to have you with us.