Finding new friends will happen, you may need to get some new activities but you can do that when the time is right.
About the separation and letting people know, you could tell a few close friends and then let them know whether it's OK to share that info if it comes up.Or you could not tell them at all.
When we S, I told my supervisor at work and said "I don't want to talk about this with others. I will let people know as I see fit." I work with a group of 20 women. I told maybe 2 people. No one else ever asked me anything. I don't know what others knew or didn't know. People don't need to know everything about our private lives. Unless your name is Kardashian
Only tell what you feel comfortable telling when you feel comfortable telling them.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss