Chemestry

So this guy at work who has a girlfriend (I've talked about him before) Whom I like and he flirst with me a lot. I was thinking we might not ever end up together and just be great friends, I think though some people have this Chemestry and its just there and in our case we have to fight against it because we can't be together. Because I know we both try really hard not to flirt, and I try very hard not to even be around him and its just there, and that doesn't mean something is going to happen, and that doesn't mean we are meant to be it just means that we have this chemestry. and perhaps we'll just be great friends.