Louis, I would love to tell you that SteveO is all wrong here and give you some better advice. You have no idea how much I wish that were the case!! Unfortunately, SteveO is almost certainly right. Girls want what they can’t have. And females are drawn to important, powerful, high status men – alpha males in PUA lingo. Alpha males have many choices and don’t get hung up on one ambivalent girl. The fact that it was so easy for her to make you like her lowers your status and desirability in her eyes.
Look at what you already told us. You decide not to go to the party and she texts you. She thought you were not serious about going over to her house so she sends you her address. She gives you a show but you didn’t take notice so she makes out with you. As long as you make her work for it, she wants your attention. Now she sees that you really want her and she loses interest. She needs the challenge. She wants an alpha male and an alpha male is hard to get. (So she decides you must not be the alpha male.) Yes, it really sucks, but it’s the way they are.
If you wanna do some reading, we have been discussing exactly this kind of thing on another thread.
As far as pheros, it’s not my favorite, but a lot of young guys really love Ammo.