DEAR AMY: Most mornings I walk by myself on a forested walking trail. Like most women, I keep a special eye out for my safety (regularly checking over my shoulder). (For context, I’m a fairly attractive 33-year-old, or so I’ve been told.) Recently, one man (aged in his late 40s) has started appearing on my walks. At first he seemed okay, and so I said “hello” back to him after he greeted me. But very quickly I started to get what can only be described as creep-vibes, based on the way he was looking at me, the way he’d try to engage me in conversation (as opposed to a simple hello), the way he’…