There is a sad fine line on both ways of the street. You've been experiencing infatuation and on the verge of stalking like what I've seen. I have those thoughts of my only two celeb crushes every once in awhile, but if you make it your focus that's all you'll think about. There is nothing for you like everyone is saying for me I'm in a unique situation where I can be with those people in real life.
So I look at this in a different perspective. If I was famous or not, just being human as a girl or guy and someone is wanting to marry me from what they like face value. I don't see it as a valuable relationship, because they may not like the bad qualities they probably don't know as a secondary thought, but mainly. I wouldn't consider talking to them, because it's unhealthy for me and the person who would be pursuing to get my attention.
It's very unsettling to put people onto pedestals whether it's a girl you obsess over or guy you don't even know to well in your friends group you may like or someone you know and celebrities. People often always forget that dissociation of a celebrity from being a person like you and me is the first and biggest mistake of this kind of behavior, because it shows you don't really love the person just the idea of them. Not just being a celebrity, but the qualities you may like from the outside, but that may not be the case at all in reality. It's like in public where people make fronts to put up as a mask to protect themselves and filter out potentially negative people in their lives. So think of them trying to be so perfect as they are with the attention and paparazzi as that kind of front too.
I hope this makes sense. I know I didn't read too much, but I thought I should put an input.