Ah, well. If I were you I'd just enjoy the tingly excitement you feel around them and let it go. If they get curious and ask questions, that's great. If they can't be lovers, it is awesome to have friends.
The world opens up... when you do.
Oh, oh, can't you see? Love is the drug for me. ~Bryan Ferry
"Love is that condition in which another person's happiness is essential to your own." ~Robert Heinlein