Is it that obvious?

Okay so I like this guy, let's call him B and it's not like OMG I want to be with him but I am having these feelings...I don't know how to handle this. I thought I was too old for crushes. So I was commenting about it and my other friend was like is it B? And I denied it and said it was my other best friend...I know lame...Jeez I think everyone knows...not cool! Why?

1. he has a gf
2. his gf is my good friend
3. he doesn't know that I like him
4. he doesn't think of me tht way
5. I want him to be just a friend

but, I can still have feelings about him right? Ah well admire from afar and move on.