Met this girl at a salsa class. One day we walked home together. Started texting. She agreed to let me know if she was free one day, but didn't. A week later we met at a party and started flirting non-stop even left the party together. We kissed outside the club. And made plans at her house the next day to "practice together". She flaked the next day saying she didn't want to let a stranger into her house even though we know each other for weeks now. 

I pretty much was done with her after this. She texted me one day after class. I made her apologize for what she did and promise that she won't do it again. 

We made plans again. This time she shows up, we get a drink and then go to my house. Make out on my bed but she didn't want to have sex. I was like okay some girls dont want to have sex on the first date, I'll wait until the second.

Second date was at her place. We made out on her couch and her bed. She lets me play with her tits but any time I go close to her pussy she tenses up and graps my hand. 

When I asked what's wrong she said she still feels like she doesn't know me and she doesn't want it to be awkward between us at salsa class. 

After a while she said she had to wake up early and I went home. 

Now I don't know if I should be patient and wait longer for sex or just stop seeing her? I know I don't want a monogamous relationship but she is probably not going to be okay with a open relationship based on her bahavior. 

Perfect scenario would be to become fuck buddies but I don't know how to get there at this point... any advice?