Girlfriend: Is a tall 20 year old, cherry blonde HB9. Extremely intelligent in school, and is very humble about her looks. When she's stressed out, and angry she kind of freaks out over the smallest things.
Background: Been dating for a month, been together for three months. Shes leaving in two months to travel Europe with her girlfriend for a period of three months. She broke up with her long term bf of over 5 years just after we met and then starting to see me right after (hope Im not rebound, doesn't really come across as it).
Situation: Last weekend, she went out on a girls night to the club with her friends. I was at the club that night (I work there/DJing); She greeted me and then I left alone for the rest of the night. I see her dancing and having fun with her gfs and with other guys, although she is never flirty with them and I have nothing to be jealous over. I did see her chatting to her ex bf towards the end of the night too, but I believe thats none of my business. She texts me at the end of the night when she gets home with "Urgh" and I text her telling her to come over to my place, I'd pay for it in a humorous fun tone. She's tired and doesn't want too so that was fine with me until she replies back with, " Don't you feel like our relationship has an expiry date?" . Only a few days ago I was talking to her bestfriend who's also a good friend of mine about her leaving to Europe and I was explaining how I understood and was comfortable with whatever happens when she leaves. I did see her and her bestfriend have a little chat for awhile in the corner of the room that night too. The text took me by surprise and I asked it what it meant, her reply was
HB9: " All I'm saying is that its hard to be 20 years old, coming out of a 5 year relationship into a brand new one knowing that its gonna end in 2 months"
I was heavily under the influence of alcohol and pulled an AFC move at this point and got angry where I texted her bestfriend (the one I just mentioned above ) asking why she had to bring up our discussion that night; It was something I thought had been just between the two of us. I found out that they did discuss it that night, but not any details of what they talked about were mentioned. I got frustrated at this point and asked her what the hell was going on because she is usually someone I go to help when I have troubles with my gf. She wasn't really able to help me, and ended up angry with how I blamed her for this situation. Anyways that night I ended up not on good terms for both of them. My gf stopped answering my texts and finished with lets talk tomorrow.
The following morning I talked to and apologized to her bestfriend and cleared that up as much as possible. My GF on the other hand did a complete 180.
Problem: She now tells me shes confused, she needs time to think about it. She told me how she really likes me when shes with me and how when shes out with her friends she feels like shes not in a relationship, and its confusing the hell out of her. She also mentioned shes scared to invest more into me. And that shes not ready for emotional progression with me since shes leaving to Europe; She doesn't want to have to miss anyone here. I texted and explained back that I understood her completely and gave her plenty of options, such as tone it done a notch, take it one day at a time, etc. I tried to be as understandable and supportive as possible because she does have a point. But I am not a person who just gives up on anything, especially this girl so far has been the best girl I have ever been with in terms of a relationship (And I have been with a fucking lot to be honest).
Aftermath: After the talk in the morning I left her alone for the rest of the day and night. I am trying my best to just break contact for awhile to make her miss me, tell me guys if this is the right thing to do right now? She texted me later while I was at work saying "I hope work is ok". And she also texted me late at night with " Goodnight

". In my mind I was thinking I didnt want to come off as angry or immature towards her, so I replied back with Goodnight, then:
GF: I dont know what to say or do now?
Me: Im sorry to hear that
GF:You dont have to be an ass
Me: I'm not, and if i am coming across as one thats totally not my intention.
GF:Right
Me: No for real I'm in no way trying to be an ass
GF:Well u are
Me: My apologies
GF: I cannot tell if your being sarcastic or wtf your deal
Me: No need to get upset _____ I m not being sarcastic or anything
And thats all for now.
So guys this is my ultimate sticking point in my game, I get girls I want to sleep with but my relationships never last more than a few months. This one I feel like its because the whole Europe thing, but how do I go about this in an Alpha way? I dont want this obstacle to defeat me and all my efforts into this girl, especially since there is still another 2 months I could still be spending with her. Am I correct when I think that she feels like shes young still and wants to have options with other men in her life at this point? What do you guys think? And what can you guys suggest that I do right now? I want her to come back to me, I don't give up on anything and I don't want to lose her. After saying that though, I am not exactly an AFC, and will let go if I have no other option. Would appreciate some help guys/ girls.
Cheers.