I like her, do I tell her?

I'm gay, she's not. She's older too. I know she likes men and she knows I like women...Regardless, we're really good friends. I've liked her since day one...Even before I knew her name. Her eyes drew me in. We're together a lot...Both single...Just friends...Do I tell her I'm attracted to her? Do I lay something down like, "I could fall in love with you." or "If you liked women, I would totally have asked you out by now." or do I just keep my cool and avoid risking the friendship?