Can someone see I have been creeping on their facebook profile?

So here's the thing..

I like to creep facebook pages, especially 1 person that I like. I've been creeping on his facebook page several times a week for the last few months.

Now suddenly, he made his facebook profile totally private. I can't see anything besides his facebook profile photo. I've tried to watch it with another account to see if he blocked me, but it's private for everyone.

My question is: Is there a way he could see that I'm on his facebook? I use a fake anonymouse profile to watch his page( I do have a personal one, but I never looked at his page on that account )

Is there a possibility that he saw the fake profile , then used a program or something and saw that it's me??

Please help me!