I'm 2 weeks in to a 4-month Erasmus semester abroad type thing (though it's a Masters so we're all mid-20s), and there's a girl I hit it off with from the start at a couple of the class bar meet-ups we've had so far - flirting, teasing, touching, dilated pupils, always liking my Facebook posts, her agreeing to owe me a beer for the future, etc.

However, she has a bf in a third country to where she's from and where she's doing the course, and supposedly he wants her to move there after the course but she's not sure as their relationship is "difficult".

We had a class meet-up in a club on Friday night, and all her best friends were there, but she was missing - I asked one friend where she was, and the friend said that her bf doesn't let her go to clubs, and often asks her to send him the GPS coordinates from her phone showing where she is!! The friend also told me that the girl "needs her brain scrubbed" for staying with this guy...

However, I saw her again last night with the class for evening drinks again, and just chatted and flirted for a few minutes at the end of the night - as she left I told her that her bf sounded like a douchebag and that she could do better; she looked at me sadly and said "maybe".

When I got home later that night she hit me up on Facebook private chat to say just "goodnight, sweet dreams"; I just replied aloofly "yep"; and she goes "Anyway it's always nice to talk with you "; I didn't reply yet.

So anyway, I'm a bit stuck how to progress from here; I'm sure we'll still keep seeing each other at bars in the evening with the group, but then there's no real opportunity for escalation. I also wonder if it's still a bit soon to play my hand and ask her to buy me the beer she owes me when it's just the two of us one evening?...

Finally, I'm not sure how involved I want to get with a chick who would be in a relationship like this... (though she seems cool, and I'd at least want to bang her)

Maybe I can message her something like: "I can't believe your bf tries to track you all the time? It sounds like he really likes you. He probably just wants to make sure you're not near any better guys that he might lose you to or something."
And follow it up with something like:
"It's a shame that he does track you, or else I'd ask you to come to this cool bar with me on Friday night for that beer you owe me"
?...

Personally i wouldnt mention you know he tracks her because it might get her friend in trouble who told you and also she might be embarrassed unless she has told you herself???

I would just hit her up with 'remember that time you owe me a beer ? well im thinking it should be this friday im really thirsty and im not taking no for an answer'

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You can fail all your life but still achieve more than those who did not try.

Hey therre,

Of what I can understand she likes you, but she has this problem with her boyfriend. As you say her boyfriend is AFC, really like who the fuck would track her girl?? OMG...

You can she that she likes you, (You should had answer to that)

Obviously its ON. So it doesnt matter what will you say to her, just keep talking, and your only problem is her boyfriend if you can "pass" from him then she is yours. She knows that her boyfriend is creepy but dont start talking about him...

She wants to fuck you. The boyfriend is just a placeholder. She probably will break up with him after fucking you. If she doesn't, she's still getting something out of their relationship, but her desire for sex is not it.

If she doesn't fuck you she will fuck someone else. (Attractive) girls don't go four months without sex.

My recommendation is stop talking about her boyfriend and just fuck her, which is what she wants, and will do with someone.

I chatted to her a bit, then asked her out for the beer on Friday - she said she's not here this weekend as she needs to escape this city for a few days after things that have been going on recently, "But I guess we will still have a chance to meet over a beer during next month ".

Meh, I guess I should just give her a bit of space and try again in maybe a week or two?...

Yes, let her for a week, and when she comes back you can ask her to go out.
Meanwhile go out, find other girls to pick up and have sex with!!!