Have you asked if she is willing to take one (or more) of those weekends and spend the time with you instead, either at the dances or elsewhere? (I can't tell if these dance events are of her specific style or one that overlaps with your love of dancing too).
Does this other guy have another friend or partner that they could take as their primary date to the events? If you haven't asked, and you want to go as her main date, DO - I think this is a reasonable reason to request a partner think about cancelling plans they already have than this, as you're not doing it last minute, she has plenty of time to discuss things with the other guy and think about what she wants to do. If you wanted her to devote all the weekends between now and then that'd be one thing, but you seem to be asking for nothing - find a happy medium, but don't be TOO selfless if you have desires, you gotta voice them.
I don't know if you have told her about your stress level, etc about when you leave the country, but if not, you might want to share this with her. As it has only been a few months you've been seeing her, what she wants to do about the weekends could go either way, but I think this relationship will be more successful for you (whether it works out long term or not) if you can tell her honestly what you want, not worry that you're asking for too much, and trust that she will be honest back about what she is willing to give.
Happiness will never come to those who fail to appreciate what they already have.
Last edited by Anneintherain; 08-15-2011 at 06:16 PM.