Getting old

This post is an addendum to a post I made earlier in the week about a long time friendship I had fading and possibly ending. I read the comments and it got me thinking if the friendship was really fading or was I just getting old and have I just outgrown my friend. Even just now they texted me and I was getting a little annoyed bc they just wanted to talk about stuff that we talked about as teenagers. I have a lot going on in my life recently and I have limited options at my age to make new friends so I'm in a bit of a bind. What do you guys think I should do? Make it work with my friend or find new ones? I'm also considering moving away to a place more remote/secluded for other reasons so maybe relationships arent as high a priority anymore.