Yes, even I lie: to people who don't matter. I don't lie to my bfs, because that person becomes apart of my life, an extension of me, and I like mutual trust. One small lie can grow into a bigger lie, and then you don't know what the fuck is the truth or not.
I don't/haven't dated women, but every man I've dated/mingled with has been a liar. That's a deal-breaker. I don't mind white lies to avoid spoiling a surprise and other similar things, but lying about important issues or even just a constant lying about small things, is unacceptable. It warps my mind.
My first bf lied about being a virgin. LOL I value virginity for multiple reasons, and he knew that, so he lied. Not only did that make me lose trust in him and what he was capable of, but he wasn't something I valued. What's more disturbing is I knew he wasn't a virgin when we started flirting. He put in EFFORT to say everything he told me was a lie, even through all of my questioning and skepticism. I wanted to give him the benefit of the doubt. After all, men lie about not being virgins as to not look like a loser. Derp.
Men have also lied about not being in a relationship, things about them that they think would make them be more appealing, flirting with other girls behind my back, giving another girl his number, those are some of the worst off the top of my head.
The thing is lies are like mice: if there's one, there's an infestation. That has been proven to be true if I stick around long enough to find out.