I think a lot of people take the "It's not lying, it's flirting," concept a lot too far. Lying has it's place in pick-up, certainly, and there's an art to it. Telling the truth whole truth constantly would make interactions completely unbearable.
Quote:
PUA: Hello, I like your breasts.
Girl: Um... Okay...
PUA: I'm imagining us naked right now. In this imagining, you are pressing your body against me. Also, I believe you should see me as attractive because of this snazzy routine I'm using right now.
Girl: Are you okay? Did you miss your medication today?
PUA: I'm not actually on medication. But I do suffer from emotional insecurities that have made me incapable of pursuing relationships in my day-to-day life and have resorted to learning how from other men who were in the same situation, but have since become far more adept at social interaction.
Girl: Everything you've ever said has made me hate you.
PUA: I'm going to leave you alone forever now.
But when you enter into a relationship, the lying has to stop. Like, completely. There needs to be a moment when everyone who is involved in the relationship gets to sit down and talk about what you're expecting from it. There needs to be disclosure in relationships for there to be trust. There needs to be open, honest communication for the relationship to actually work, because if you're not communicating effectively, the drama starts. As long as everyone gets onto the same page, and stays there, things go a lot more smoothly.
Sometimes that means you lose a girl, because she isn't willing to sit down and talk to you about expectations, or she is, but she isn't willing to adhere to your expectations. That's fine. The field of my dating is much more narrow because I'm polyamorous (ironic, yes?). If a woman isn't willing to do the poly thing, I lose her. Most of the girls I talk to are willing to give it a shot, though, and I wouldn't know that without disclosure, without openly stating my intentions with the relationship.
And your lying skills can actually be quite beneficial in that regard; a well-crafted lie is something that takes the truth and bends it. Open, honest communication requires that you find ways to say things that may be uncomfortable in a way that doesn't set off alarm-bells in girls' heads, and knowing how to twist the truth into "the truth but more comfortable" is a powerful relationship management tool.