Warning: Huge read. This is two field reports that combined into one as I faced a similar dilemma.

OK, I took a huge risk and did something everybody on the forum has argued me against. Basically, I got ignored by multiple texts and it wasn't looking good for me. These girls are beautiful so I decided, "heck I pretty much lost them. Let's give this a shot, just as an experiment." I took a huge risk and broke rapport along the words of "I don't think this is gonna work out." I know breaking rapport is meant to be playful, but this is what happened so far.
Here are the two stories, which I sent the texts to at the same time. I went on two dates with each of these girls, and they stopped responding to my texts after two dates. I live in San Francisco. One girl is a psychotherapist for children in San Jose, the other girl is a stripper from Florida who moved to strip in San Francisco two months ago.
===========================
Approaches and Day Twos

Therapist - HB8 Filipina
I met her online. We chat and text, then I met her at her home on 8/29/13. I rode in with my motorcycle and decided to use my motorcycle safety gear as a lock-in prop to her house. I ask if I can drop off my stuff at her room and she complies (this'll guarantee me that I will end up in her bedroom at the end of the night). We met for drinks, then came back to her room. No sex, but we made out and she let me suck her breasts. We spooned and I went home the next morning.
On 9/1/13, we went for drinks. Being Labor Day weekend, she met up with her friends and I get along with them fine. Closing time. We go back to her place and drink til 4 am. Because there are cops everywhere, she invited everyone to stay over.
I slept next to her in a futon, under a blanket. While everyone was asleep, we makeout really quietly. I pull the blanket over us. I suck her breasts, and reach into her panties. I finger her and she's trying not to moan. She kisses me and moans into my mouth.
The next morning, everyone is gone. We go for breakfast, then she has to pick up her kid from her baby's daddy (they alternate weeks to have him). We depart. During the week she has her kid, I try to arrange a date. She doesn't reply. Maybe she's getting buyer's remorse from me fingering her next to her sleeping friends. I attempt a non-sexual date. "Hey, I have a crazy idea. We only met up for drinks. How about we do an old fashioned dinner date? How does Santana Row sound?"
No response after a few days, so I decide to throw in the big weapons as a last minute hail mary. Yesterday, I sent her a text: "Hi, I gave it some thought. You're really nice and we had fun butI don't think you're the girl I'm looking for. Good luck with your search! "

Stripper - HB9 blonde
I meet her on Thursday night 9/5/13 in a cafe under a hotel. She was nauseous and needed to go home soon, but she was friendly and wanted to hang out the next morning. Friday morning, we went for coffee, hung out, held hands, and kissed. She hopped on my motorcycle and we rode around San Francisco. At a stop, she says "Hey, I actually like you a lot. I think you're really cool, but before we get more serious I have to tell you something." Half-jokingly I say "you're a stripper?" She says "What? How can you tell?"
"I've dated strippers before, and you gave that vibe."
"So, do you mind?"
"A job's a job."
I drop her off at a strip club she's trying to get hired at (she has an audition there. Then I went to work. She texts that she wants to hang out again next morning at 10. However, she never texts me back, not even at night. She flaked on me.
I don't think I've built enough attraction so I decide to also throw it all in and see what happens. At 1130p, I send her a text. "Hey, I'm not sure what happened today and I'm sure you have a good excuse. I'll just make this quick. I think you're really sweet but I don't think this is going to work out. I know you just moved in and are busy settling in, but at this point in my life I prefer someone who has their stuff together. I had fun and hope you did too. Good luck with your auditions! "
======================
The text replies

Therapist
Me (9/8/13 11:35p): Hi, I gave it some thought. You're really nice and we had fun butI don't think you're the girl I'm looking for. Good luck with your search!
Her (9/9/13 8:14a): Hi, sorry don't mean to ignore. Nothing against u really. Just had to deal with some things. Hope we're still ok. Ur a cool person as well
Me: I know you may have been busy, but if you can't give me two minutes to reply a text how do you expect me to give 50 minutes to go to San Jose to meet up w u? I give my time to those who appreciate it, and I always expect a relationship, even from the start to be 50:50.
I never do this, but I'll give you a second chance since I'm new to online dating. And you seem like a nice girl. We had fun and I really want to do more things with you.
Her: Ya I'm busy but can make time if I need to, what I meant was that I had to deal with important issues. I'm not online to get in a relationship rite away. I just wana make good friends first. I like to take things slow. I don't think I did anything wrong. Just taking care of what I need to.
Me: That's fine. Take care of your stuff first, then in a few weeks when you're done and ready for my time, give me a call
Her: Thanks. I knew u were a reasonable guy.

Stripper
Me (9/8/13 11:24p): Hey, I'm not sure what happened today and I'm sure you have a good excuse. I'll just make this quick. I think you're really sweet but I don't think this is going to work out. I know you just moved in and are busy settling in, but at this point in my life I prefer someone who has their stuff together. I had fun and hope you did too. Good luck with your auditions!
Her (9/8/13 5:48a): Uhhh... What? Good morning to you too... Guess you won't want to see me today
Me: I do want to see you. But that was supposed to be yesterday, like you planned. If you were too busy you could've at least give two minutes and told me to not wait for you. I give my time to people who appreciate it, and you could expect the same with me in return. I like you, a lot. So I'll give you another chance. Fyi I don't want a relationship to lean in one side too much. It has to be 50:50. Agreed? :p
Her: Actually. I'm a ditsey person and this is likely to happen again. Are you sure you want that? I would love to go out again but I thought you should know.
Me: I would love to go out w you again too, but you wouldn't like it if I didn't show up on a date that was planned, would you?
Her: What if I say yes? Quietest date ever.
Me: Haha, dork. Why are you up so early?
=========================

More updates soon to follow...

Very interesting, we all have similair issues.

Can't wait for the update!

Yea, I noticed a lot of people they have similar issues. It's common PUA practice to ditch the girl after sending more than two or more texts and not getting a response, but if you already "lost" the girl, why not try something that's totally out there, especially if the girls were pretty fun and has a lot of potential.

It looks like for these girls, it worked. And my theory on how it might work is: A lot of girls blur out without an "official break up" so I think by breaking up with her first, it gets her chasing you back, as guys never say things like "I don't think it's gonna work out" or "Let's just be friends."

I know, I know, we all used these lines when we joke around girls we've just met (role playing, role reversal, breaking rapport, etc), but I think using these phrases in a serious tone can threaten a girl (who's invested a little bit of time in you) and have her chase you back. Of course, the risk is big. She might agree with you, and you lose the girl forever. However, in that case, it was probably not meant to be. But, the reward is high, in that you can salvage a dying relationship and get a girl back that you pretty much lost already. I forgot where I read it from, but one PUA said that if you badly want a girl, you might need to do things that risk losing her.

I have this similar issue like that with a girl, in the beginning everything was alright and she texted me a lot.
After we had a failure attempt @ sex she kind of started to ignore me.
On the 2 date's we wen't she came to my city with train without hesitation, we now have another date on thursday but she was like if her dad wouldn't give her the car than she won't come because trains are boring or whatever she said. She's obviously not really into me anymore, there is still hope though.

Do you think i should use this tactic on her?

If she's still replying to your texts, I would NOT use it. These girls I was dealing with were not responding to me at all, and I felt I pretty much lost them. I feel this is a last resort tactic.