What is the freakiest/creepiest thing that’s ever happened to you? [Serious]

I had a male friend, let’s call him F (Mister F!) I thought was trustworthy. He didn't know my boyfriend directly, but he knew that I had been with him for several years and he had never shown an obvious interest in me and he never hit on me. Everything was fine until I met a friend of his at a concert who asked me if I liked the gift that F had bought for our anniversary, as he had helped him choose it. I told him I didn't know what he was talking about and I didn't understand what he meant by anniversary. So he pulled out his phone and showed me the photo of a necklace AND a photo of me, with F, where I was wearing that necklace. I had never seen that piece of jewelry before and I remembered that photo was taken during the birthday of a mutual friend months prior, except we were in a bar surrounded by people of whom there was no more trace. I soon found out that he had told everyone we both knew that we were a couple and had a bunch of photoshopped pics of us both on his phone and all over his house. He also had a little shrine in his room with a hair band of mine that I had lost and some empty plastic bottle from which I had drunk. I confronted him and it didn't end well, he stalked me for months, every time I turned off the light in my room at night, he was watching me from the street and sent me a message to wish me good night. Every concert or theater play I went to, he was there. Every trip abroad I made, he did the same journey alone months later. Then after some time he stopped, it’s been years but occasionally he still posts some weird ass shit about me on fb.

TL;DR I got myself a stalker who followed me constantly after been exposed because he told everyone we were a couple while I was very much in love with my bf.

/r/AskReddit Thread