Need a song a lyrics for my situation

So the girl that I'm dating has an ex girlfriend who she no longer talks to and I have never met. I have spoken to her on the phone and I have seen many pictures. Recently I've been thinking about her a lot, she stalks my facebook and tumblr and I stalk hers. I've become very intrigued with her and I am almost certain that there is a song about this. Anyone know lyrics that pertain to this?

There is no song pertaining to all the information that you wrote. It would be interesting to write an original.