Search Results: adding friend on facebook

This happened several years ago. I was on my college campus and this random guy walked up to me claiming to be an old friend and started talking to me. Then one of his friends walked by and he introduced me to her as his friend. The weird thing was, I had never seen this guy before in my life. And I went through every single possibility of who it could be. It was no one I recognized yet he claimed to be one of my best friends. We talked for 20 minutes. He knew my name, where I'd gone to school, where I'd gone on vacation everything. He knew me, but I didn't know him. I know someone will say, "Oh, he probably just changed so much that you didn't recognize him." But hear me out. I didn't ask him his name out of pure embarrassment that he knew me, but I didn't know him. HOWEVER, he told me he saw my vacation photos because we had a mutual friend on Facebook. This friend was my best friend's girlfriend, and he claimed to know my best friend as well. I went on her person's account and searched through her entire friends list. Low and behold, I recognized one of the pictures in her friends list as him. HOWEVER, the profile had a name I had never heard before, and it was quite an unusual one. Also, if he knew my best friend and was MY friend, why didn't he try to add me on Facebook? I have no idea how to explain this other than he had some how crossed over from a universe where he and I were friends. I've had a few strange experiences with glitches in the matrix, but this is by far the most compelling evidence I have seen of parallel universes.

What do you guys think?