<human>: Could you distill the essence of the text into 1-3 sentences?

I just completed my first semester at college and did very well-- all As and Bs. I should be really happy for myself but Im not. im stuck thinking about how my girlfriend isnt coming back.

before i was happy for her. with a crazy, troubled past shes finally ready to open herself up and seek treatment to deal with the emotional scars shes suffered. but now i feel really alone.

towards the end of the semester there was essentially a huge fall out between my girlfriend and our group of friends. i decided to take my girlfriends side and havent talked to anyone in our friend group in the last 3 weeks.

i dont know what im gonna do when i go back. i dont know who is gonna be there for me or if im gonna wanna make new friends. i am a funny happy-go-lucky guy but recently ive just felt down and alone. i plan on flying out in january to see her but i just hate the whole situation.

there was a trust incident right before my girlfriend and i became official--she hooked up with a guy at a party back home-- and im just sick to my stomach right now that shes gonna do it again. i know shes sorry for what she did and she promised she would never hurt me again but i just dont know if i can believe it.

it just seems like i have had a lot on my plate and i dont know what to do. my mom and i think i should transfer to a school closer to home after the year. i dont think my girlfriend and i could make it work if that happens.

any thoughts would be appreciated. thanks.
<bot>: my girlfriend isnt coming back 2nd semester because shes getting treatment for emotional scars. i was happy. now im sad and alone.