I (22F) want to become FWB with my friend (22F)

I (22F) am a married woman. My husband (22M) is completely okay with me seeing other women. I have a college classmate who is also queer, and she is single. I have been flirting with her and she is either completely oblivious or is not upset by it, because she seems receptive!

We're going to hangout together outside of school for the first time soon. Do you have any tips? I am really trying to find the line between flirting in a good way versus making someone uncomfortable. I don't know how to bring up that my husband is okay with me seeing other girls. I don't know how to flirt more without coming off creepy. I don't know how to find out if she would even be interested in becoming FWB eventually.

Is there even such a thing as a subtle way to put the idea of me in a sexual light in her head without being a creep? Consent and comfort are so important to me and I'm scared. I am a baby queer lol.