It’s happened a few times. I used to work with this girl who had an obvious crush on me (always hanging around my desk to talk, bringing me snacks, offering to give me a ride home when my car was fucking up, asking me if I had a girlfriend etc) once she found out I was gay she eased up a bit but still made no bones about liking me as more than a friend.
Other girls might not hit on me but once they find out I’m gay they start getting way too TMI with me about things because I’m the safe guy who won’t hit on them, or they want to treat me like their token sassy gay BFF and that’s not my personality at all.