"Nobody pretends to be gay to get attention, who would?" Political/advantageous "lesbians". The (usually hot) women who claim to be 'lesbians', maybe even live the lie for awhile, to be 'cool' progressives, or to 'smash the patriarchy', shock their parents & the authority figures in their lives. I don't know if young women are doing that as much now, I saw it when I was younger and being gay was less mainstream and acceptable.

I had a friend who was a 'bullshit lesbian' for awhile, although I think for her it was less political - it was because men were frustrating for her (she was overweight and not very attractive, mostly because she didn't smile, she was quite pretty when she did, which wasn't much) and because she seemed never to outgrow the finding-your-identity thing. She announced she was 'coming out' about being gay at some point after her divorce, having claimed to be bisexual for years. I'd known her since the mid-80s and I thought, "There's no way she's gay, or even bisexual. She likes dick too much!" She had one or two gay relationships while she was going through her 'gay phase' and now she's remarried. To a guy.