<human>: Summarize the given text in a few sentences.

Hi, r/relationships

My girlfriend[19] which has been with me[m,22] has left me after more than 4 years. 

The hard thing is, that i did not expect anything. We did nkt see us that much in the past few months since she moved away to study. But still, things went good and we even went on vaccation 5 Werks ago and it was a blast.

Now, this saturday she told me she needs a break (but we are still together), heads back to her study town on sunday an tells me on tuesday that she has fucked another guy ob sunday because "she was sad and things happened" and that she does not love me anymore.

Until two weeks ago it was all good and now she tossed it all away, encountering out first real Problem.

Thing is: i am totaly not able to live my life right now. I didnt go to work and am total down. Not only my whole life and future collapsed but also has she hurt me so much having sex with a rabdom guy. We were each  others firsts.

Now i am devastated. On the one Hand i still love this girl but one the kther i know its over. We will See us  in friday for a last time and i dont know how to react. I dont know if i will try to get her back even if i habe no real Chance and dont know if i want to be with her anymore.

additional information: when i met her she was sucidal and had serious mental problems, i did everything i coud, got her professionell help and was there all the time. about 2 years later she is a unbelievabely independent and gorgeous woman.

Thanks for listening, how would you react on friday? How would you try to silence the pain?

Sorry for my englisch in combination with german autocorrect.
<bot>: My girlfriend left me after 4 years without any hint or sign and fucked another guy before ending it. i dont know how to continue