July 31, 2012: Return from deployment; goes home, hugs girlfriend and her daughter; goes out to dinner
August 1, 2012: Girlfriend hangs out with a new guy friend, I don't mind as long as he is gone by later; he doesn't leave until midnight
August 13, 2012: Girlfriend hangs out with same friend, I don't mind as long as he is gone by later and we can spend the night together; he leaves, comes back and hour later and doesn't leave until midnight.
August 14, 2012: Same as the 13th
August 15 2012: Same as the 13th
August 16, 2012: He shows up and I tell my girlfriend that I don't want him here, that we don't have any time together and I just want a night to ourselves. He leaves, she doesn't talk to me all night.
August 17, 2012: My girlfriend goes into the hospital, I spend all night with her; the second i leave her new guy friend shows up and stays all day, never leaving.
August 18-27: Same thing.
August 28, 2012: They send messages back and forth and she doesn't talk to me at all, blames it on me being on the computer
August 29, 2012: Her guy friend comes over and she takes her daughter and goes to the park with him all day.
August 30, 2012: I snap and tell her that he is only trying to get inbetween us and make me look bad; she defendes him till I finally give up on the argument
August 31, 2012: We fight again about her guy friend who she spends 2 hours 14 minutes on the porch talking to as I try to make dinner for her and I to have a slightly romantic dinner at home. She talks until well after I'm done and then tells me she isn't hungry anymore; we take her daughter to the hospital because of severe pain in her stomach; she stays at the hospital with her guy friend all night and all day the next day while I'm at work.
September 6, 2012: I get off of work and text her before I leave base that I just want a night where it's us and only us. Just a chance to help us reconnect with each other after being apart for 7 months, she says fine lets do it. I get home and she is hanging out with her friend already. He doesn't leave and they basically throw a party on the lawn in front of my apartment. I get severely pissed and tell her "All I wanted was a fucking day where we can be like we used to, just one fucking day where we can lay on the couch and I can hold you and we can just relax, and you decide to throw a fucking party and completely ignore me."
She says, "Why don't you act 21 for once? You don't have to be in here always running errands and being so fucking boring."
To which I said, "I'm not a fucking child, taking part in some sophomoric actions like those fuck-tards is not part of my plan. I'm acting like a responsible adult, and the only reason I'm doing all of this is because you are doing none of it. So just go enjoy your friends while I clean the house."
"FINE!" she said walking out of the house.
We get into another argument and she decides to tell me I'm a psychopath and that she wants out. I try to sit her down to talk and she yells at me to get out of my way. She grabs my gun and tries to go outside, I rip it out of her hands, and throw it on the couch. She packs and leaves with her new guy friend. I text her that night saying that I love her and I just want to talk to her. I text her a few hours ago wishing her luck with her appointment. She texts me back, Don't ever contact me again.

I come home with glass everywhere, picture frames broken, jars smashed, a back window punched in, in one of the rooms and my Xbox 360, gone.

tl;dr
My bitch of an ex-girlfriend cheated on me, broke a fuckton of my stuff, and robbed me of my Xbox. All of this after I spend 7 months fighting in Afghanistan.