How does one dress 'lesbian'? I'm sorry, but I'm absolutely boggled by this statement.
I got nothing; it's about stereotypes though--much like the one where I can't be a lesbian because I have long hair.
I suspect if you ask around, you'll find someone who tells you exactly how "lesbians dress." Not just some, but "lesbians."
It's part of the "you don't look lesbian" trope, the sibling of the "you don't look gay" trope.
And why would employers know about your personal life to the point they would knew ANYONE lived with you?
In my case, I don't see well and can't drive, so my partner is likely to be involved in picking me up at work, or dropping me off. Moreover, if other people bring their spouses to events I'm damn sure bringing mine as long as she wants to be there. There are at many workplaces things like pictures on one's desk. (There's nothing like being asked to remove your spouse's picture when everyone else has theirs on a desk because you're in a same-sex relationship--and yes, it's perfectly legal in lots and lots of places.)
There is an inadvertent assumption for many heterosexual people that being queer is ultimately always about sex. Not about love, or that same sex couples often have a fairly mundane life as a family or couple. It's all about the sex, to the point that there's that underlying assumption that same-sex is "kinky" or "unusual" or even "lacking" or "not real sex."
That's partly what's behind many statements from people who think of themselves as non-hostile about the "homosexual lifestyle."
For some, because the existence of a same-sex couple is all about sex--and hence thus somehow "kinky" or otherwise not socially acceptable. So it's "not OK" to be out, ever. Family members who ask you not to use "that word" (homosexual or lesbian) about yourself, for instance, even when you have people ask you if you're "seeing anyone."
There's often an assumption that that's all a same-sex couple has as a couple is lots and lots of really great sex without worries about pregnancy. And sometimes, there's a fairly clear undercurrent of resentment, too. That's sometimes part of assertions that same-sex couples want "special privileges" with respect to being allowed to have their relationship federally recognized, with all the rights, privileges and benefits of taxes, social security and pensions that heterosexual couples have.
This odd sexual obsession/misunderstanding is at least part of the questions about "what can two women do," or assertions that "You just haven't been with the right man," or "who abused you," or the implication that you've "settled" for something lesser ("You could get a man if you'd just try!") or "What if you decide you want children/you'll never have children!"