this always happens to me, I see a HB and I am attracted.
So I open, play C/F, make her laugh, and tease her a little.
But then after she starts sending obvious IOIs (touching your leg, putting her head on you shoulder, initiating the convo with you.)
And I lose complete interest, and don't want to move into comfort phase because I don't want some girl, that I'm not attracted to,become all clingy.
So I show obvious disinterest, which just makes them MORE attracted to me until they just give up.
But once they do give up, I become attracted again.
It's very frustrating...

has this happen to anyone else?

Whats up man!
Alright i don't know what you are attracted to. Tit's and ass will always be attractive wether there on your knee OR your Shoulder. it seems like your mind is sabatoging itself. you may have some sort of fetish were the girl is not interested. First (In your case) you need to stop thinking the girl will stay all clingy. Keep the END Result in your mind. OR make a goal to have more than ONE girl all clingy, AS MANY AS YOU CAN, to show everyone your the MAN! and just have fun, You seem to be good at that anyway you dont have room for frustration in your reality! in your life so ELIMINATE IT! Your In Control of YOUR reality!

Hope That Helps
Keep Gaming, Live Life- Scorpio

I say keep it simple. If she sends you major IOI's like resting head on shoulder, or touching you, say: "I'm trying hard not to kiss you right now". Don't say "so hard" instead of hard, because that shows weakness, and a HB7,8,9,10 is looking for a strong PUA, someonw without needyness

LOL. You just have to figure out WHY you're losing interest in her. She's doing everything by the "textbook". So, what's YOUR problem? lol.