Is this just a coincidence?

So, there is guy I really like. I have had a crush on him for more than a year. We work at the same store, unfortunately not the same department. He has given me signs of liking me too. There are some days were he will like kind of ignore me, and other were he will look at me in the eyes. There are days were I will lay on my bed and think about him (I know, obsessive! not good) Those are they days where he will look at me, stare etc. The days I don't do that are the days where he ignores me. Haha, it's making me paranoid! Is it just a coincidence that it happens? Thanks guys.