Hi guys, wtp ?
so there is a simple opener, a nice one, it work many times ...
If you are in a school where we learn lang.just go ask the girl...
You: Hi, Are you in [Lang] stream ?
If she answer no: oh that's good,well, I'm searchin' the translation of "you're sweet/or just pick something that u want her to say to yo" in that lang....How we say it in your's ?
She: [WORD IN THAT LANG]
You: thank her for the compliment or what ever u said at first, but in that language..
And you just continue in english =)

Be smart, and flexible..The coolest thing that we do, is, when we push the girl to say or do something that we want.She will feel that she is manipulated, so in fact, she will try to do the same, and then u can manipulate her for the second time,and if she will tell you that u'r manipulating her, just say : i'll let you control me by inviting me for....
And there is another manipulation and every thing will be well
Hope that will help u
see ya !