whats the purpose of doing this? I know sometimes lying is flirting, but if you could explain the logic behind this everybody might see your point of view. No disrespect Im just curious.

Being in a "relationship" shows you are preselected by fems. It's a DHV tactic. We're also inducing a "want what I can't have" mentality in her. It's the same effect as wearing a wedding ring.

While in theory everything you say follows form and should work I think it's a bad idea. At some point you're going to have to get her number and transition from "I'm getting your opinion on something" or "just being crazy and playful" to "i want you number so we can continue this flirting with each other" at which point you basically will come off as a cheater. Yeah, some girls don't care and will bang guys they know have girlfriends but most don't. Even saying you have an open relationship usually translates to women as "I'm cheating and basically telling you that I am."

It just puts you in dangerous waters.

You can create the same pre selection and DHV effects by getting comments/wall writings from a plethora of HBs (real or fake) without risking looking like a cheater.