John Lennon reincarnated?

My girlfriend is convinced that I'm the reincarnation of John Lennon. I'm always told that I look like him, but I'm pretty sure that's just coincidental. However, there's other reasons that she's convinced. One big one being my personality, and that I've made facial expressions exactly the same as his since I was a child. Others include my mannerisms, and how much of a realist I am. She says my views on the world are his, and that my will to teach and help people are his. This can all be coincidental, but there's one thing that makes me think otherwise. There's a picture of John that I'd never seen before until last year, but I remember the picture from before then. I thought that maybe I'd seen it when I was a kid and was just remembering that but when I asked my dad if we used to have that picture or if my grandma did, he said that we've never owned a picture of him and neither has my grandma, which weirds me out a bit. All of my friends who believe in past lives and know John are convinced too, but you'd think I'd be more inclined to music and not science if I was. There's a lot more that leads them to believe that I am, but this is the basics of it. I don't know, what do you guys think?