DB, I see your points and agree w/ some. You can give up to easy, b/c even if the girl is interested, she's gonna yest you.
But here is the truth. If she has high interest, and tests you, or tries to pull a power play on you, to gain control and make it seem your interest is higher than hers, and you go along w/ it, she loses some respect for you, which erodes interest.
But if she does that, or any other type of disrespect and you walk, she'll cut the shyt and realize she can't fukk w/ you= heightens interest. She'll pursue you, unless she is so insecure to the point where she is a 'princess' in her mind, and no guy deserves her, so she won't pursue. This type of girl would for sure NEXT YOU if you were in a relationship w/ her, b/c remember, nobody is good enough for her.
I know this to be true, happening to me now. A girl knew I'm interested, and I know she is interested, some BS went down and she told me we 'couldn't be a couple'. NO, I damn sue never asked for that, but she did it in the context of us being friends, after knowing all along I had interest. It was a power play on her part b/c she found I knew she was interested.
I told her no friendship, nada, she's history and out of my life. The very night I told her that, she was back pursuing me.