No, you aren't creepy and I don't think you're really a dork either.
You are just very good at doing research on a subject (Ben) you care about. You find him interesting, that's not a bad thing.
And the odd thing is that he really
is private, just in a very open sort of way that makes you think he isn't being so secretive. Think about it, to this day no one's really sure if he and Tamsin Egerton were really dating, though I don't think there was ever really substantial evidence to say they were. To my understanding, though I can't find the interviews right now and don't feel like looking, there was a period of time when he wasn't giving a straight answer to the question "do you have a girlfriend" in some interviews. We may know what he does when he dates, I don't think he cares about that, but I don't think he wants people to know when or who he dates and so we don't know that.
And after loooooooooooooooooooooong hours of looking I
still can't find any place where he talks about what religion he is. I've heard it said that he's a Christian, but I've also heard it said that he made "a snide remark" about Christians. (which btw doesn't mean he isn't one. I have been known to do that sometimes because we Christians can be very stupid and un-Christ-like and it makes me angry. Jesus Himself said some pretty awful things about the religious people of His day. So in order for me to comment on the "snide remark" and say what it says about Ben's beliefs I would need to know what the "snide remark" was.) But as for what Ben says about his faith, well he just doesn't talk about it. He seems to be very good at dancing around the subject in interviews.
So yeah overall, I think Ben is VERY private when he wants to be and if he doesn't want you to know something then you're not gonna find out. But I think he's pretty open and doesn't mind to share most things with the general public.