Robin completely led Steve on

When they was tied up in the chairs together she told him that story making it sound like she was totally in love with him. If shes a lesbian and not into Steve at all why'd she tell him that emotional story from school acting as if she was longing for him while he ignored her?

Then later yeah she explains she was only obsessed with him because the girl she liked wouldn't stop staring at him, but she knew how she made it sound before, she led him on then when he bit she turned him down like "No thanks i'm a lesbian". I dunno that just seemed mean of her to do that, he opened up to her feeling bad about her story from before and she completely blindsided him like "Yeah what i said was really bullshit i'm gay".