Hi, once almost had something going on with this girl one and a half year ago. She kept texting with other guys every time we bumped into each other at that local bar, but at the same time flirted with me... Cut a long story short, she was really searching for a boyfriend. Just as I was making some progress, she hooked up with someone else who she's been together with for about a year now. Ran into her after that, probably displaying low value, and she pretty much first literally forced me to join her for a drink and then ignored me for the rest of the evening (she didn't even give me a chance to talk to her but totally blocked me out).

From that moment on, I totally ignored her every time she tried to talk to me in that bar (where she would usually show up with her boyfriend).

We're meanwhile pretty much ignoring each other every time we meet and somehow, that seems pretty childish.
Especially when I talk to her friends and she's also there.

Anyone shares the "If she turns cold, you turn COLDER" philosophy?
http://www.sosuave.net/forum/showthread.php?t=179528

Also, plainly ignoring her doesn't seem to be a very Alpha-male thing to do...
On the other hand, I don't really feel like getting involved with her in any particular way after how things went (or rather: didn't) between us.

Is it ok to ignore her?

Then don't feel like you are ignoring just feel like you are moving on.