Is it normal to become overly cautious not to bother close friends?

I say if you're a close friend of mine, I don't have to worry about bothering you. I'm going to talk to you regardless of whether you want it or not. Hehe

I think if someone has been let down by a friend, someone close you trusted it can make you weary to build close friendships in future.

Probably not but that’s the way I am

maybe some trust issues there