not in a relationship relationship

When a person you are interested in doesn't give any fucking sign/clue that she/he is in a relationship. FUCK
So then you spend a lot of time trying to get with them, BUT they are already in a goddamn relationship.

Me: Hey can you help me with something, there's this girl you know. I really like her

Friend of the person I am trying to get with:
Ohh, she's taken

Me: Well frick, why doesn't she at least have one picture of them together, so that I don't waste my time, or potentially get face beaten in.

Friend of the person I am trying to get with:
Well, that's not her problem, you should have known.

Me: wtf, HOW?

Friend of the person I am trying to get with:
Idk.

Me: So you are saying she is in not in a relationship relationship