Honestly, there's not much I can say beyond that sometimes there's just no physical "connection" beyond the first couple lays. I've had these things happen to me before, but it was pretty much a mutual loss of interest after just 2-3 really passionate nights of sex. Sometimes they just realize that what this isn't exactly what they're looking for, and become distant. I think your strategy is fine. Stay distant and don't warm up until she does.
Good luck.

It could have just been a bad day. But as you can't solve that, let me give you a second possible problem.

This could be something emotional with the girl. My first guess is that she doesn't feel understood. This is something I hear a lot from my female friends. Sometimes the guy isn't intelligent enough but more often the girl doesn't feel connected emotionally enough. This can be solved if you express real interest in her values and ideas (not so much in how she spent the week, but the abstract stuff), you may use mirroring conversation techniques to make sure you understand what she means and give your opinion about it. Or if you don't have one yet, say you'll think about it and get back to her about the topic. AKA really listen to her.

This soft emotional stuff may be somewhat unpopulair as a solution on a PUA forum, but when girls don't feel understood this can block them from having passionate sex. Especially since you have had passionate sex with her before, it's rather something personal than something in her general sexual ideas. It never hurts to give this a try.

Some topic suggestions: afterlife, loyalty, anything religious. Specifically: how (much) families should interact, how much engagement one should put in a conflict that doesn't concern him, whether there are circumstances under which illegal stuff (theft, abuse) is acceptable, how a country should treat economic immigrants, how to deal with falling in love with your best friends' ex, aesthetics in society, anything she tells you about her friends/colleagues (always ask what she thinks about it), the importance of spending Christmas together etc.

I'd love to learn more about this.

I've had situations that fizzled out after the pasionate nights.

Does it have to do with your perceived value after the lays? Connection / add more comfort?

Can you also give me a few tips on creating a genuine emotional connection with a chick, i think thats the phase im least good at.

I'll have to disagree with most replies. I read quickly, but it seems like everyone is finger pointing the girl. Personally, I have to blame you, TheMGuy. "..and that shes confused and expected more emotions up until this point." This is her telling you that she's missing the emotional connection she's longing for. And for her to be blunt about it clearly illustrates her interest in you.

Tell me, do you really like her? I suspect you do because otherwise you wouldn't be taking the time to tell us about your situation. So then why are YOU being distant? She's not the one being distant. YOU are. Are you losing interest in her? Are you losing attraction for her? Do you like her personality? Are you turned off by some of her behaviours? Search deep down for the answer, because ultimately only YOU will be able to help yourself. If you still find yourself interested in her, you still are attracted to her, you like her personality, and you're not grossly turned off by some of her behaviour, then there's a huge problem. Perhaps a rough upbringing? Showing affection is hardwired in our DNA, so there's no excuse to go into robot mode if you really care for a person.

And the other problem is I kinda lack building an emotional connection through talking, since im not really a big talker or so.

That is not an excuse. Body language and actions are a lot more efficient in building emotional connections. Women evolved to select their men based on who would stick around the longest. Because a single impregnated woman with no man to look after her and her child would perish and be eliminated from the gene pool, women evolved to select their men carefully. And of course, way back when our ancestors hadn't invented language, body language was everything. Do you look her deep in the eyes? Do you hold her waist? There are many subtle things a man does to show a woman he cares. If you're not doing those things, perhaps you don't care. Perhaps you have more important issues to explore.

That is not an excuse. Body language and actions are a lot more efficient in building emotional connections. Women evolved to select their men based on who would stick around the longest. Because a single impregnated woman with no man to look after her and her child would perish and be eliminated from the gene pool, women evolved to select their men carefully. And of course, way back when our ancestors hadn't invented language, body language was everything. Do you look her deep in the eyes? Do you hold her waist? There are many subtle things a man does to show a woman he cares. If you're not doing those things, perhaps you don't care. Perhaps you have more important issues to explore.