DEAR ANNIE: I have a younger co-worker who I met at a work social event, and we started talking a bit about novels we are writing as a hobby. A few weeks later, he came by my cubicle to ask me more about writing, so I gave him a few resources to a local writers group. Ever since then, he keeps stopping by, often interrupting my lunchtime. It’s clear that he never has a specific question for me and will grasp at straws or ask awkward questions just to keep conversation going beyond a normal or considerate time. I don’t mind occasionally chatting, but these constant interruptions when I am busy …