Ah, this is where cultural differences come into play.
I've noticed that a lot of Chinese think that girls who hang out in bars are "bad" or immoral.
Many of us foreigners enjoy hanging out in bars because they're a great place to socialize, listen to music and have a few drinks. You'll find most people in them to be relatively-normal.
Loud and obnoxious, yes. But nice people, nonetheless. Including girls.
I'm telling you, man, go to La Bamba or Helen's Cafe in Wudaokou. Even Lush. Or sit outside Propaganda with the thousands of other drunk people acting like wild savages.
Every time I go to those places late at night, they're stuffed with foreign students, most of whom are shitfaced drunk.
Your English vocabulary Word of the Day: shitfaced (adj): very drunk.
Now I'm not telling you to take advantage of intoxicated women, but you're young, they're young and it's a prime chance to exchange in cross-cultural bodily fluids... which may or may not develop into something more serious.
In any event, hang in there and don't worry. With the right philosophy, you'll be okay. And by right philosophy, I mean stop telling your life story in online forums.
Romantic, yeah. But you're only going to attract weirdos. And trust me: Beijing is full of them.