<human>: Can you condense the text into a few key points?

Pretext: I'm 27, she's 19. Had been together for 9 months, and living together for the past 7 (no real issues between us other than this). 

She's been acting not herself from the beginning of August, just small things. Pushing me away when I'd try to hold her hand or put my arm around her. Little to no sex(not a big deal just something I noticed). And always on her phone. 

The other night she was pressuring me to go out with a friend. I had mentioned I might want to go out with him but decided to stay home. She brought up the fact that I hadn't hung out with my friends in a while and should go out because she was going out with a longtime girlfriend. So I went out, had fun with my boy and was walking home. I called her three times and no answer, so I drunkenly walked the 10-12 blocks home. I arrived at 1030, she didn't come home until 12.

We quickly went to sleep. I was just laying there thinking about things as I had been all month. I got the idea to go into her phone. It's not something I'm proud of, I respect privacy. But I felt like I talked to her, and her reasons just didn't seem to add up. When I checked the call log, the moment she had dropped me off at my friends house, she called this other guy. Someone she had mentioned once or twice, but never hung out with in our time together. I also noticed there was no phone calls or texts to or from her girlfriend.

I instantly woke her up, and had a discussion which consisted of her not being able to explain why there were no communications between her and her girlfriend. Her reason behind calling the man in question was to discuss with him, problems that we had in our relationship.

Without making this post longer than it is. I don't have any family to fall back on, and I had ran out of cash about August 12th (I lost my job on july 24, got another job a week ago). So I don't have a place to go or money for an apartment just yet. Now I sleep on the couch and have to live awkwardly together until I can save enough to move out.
<bot>: Went through my girlfriends phone, found she called a dude when she said she was with a girlfriend. She broke up with me, but we live together so now I live with my ex-girlfriend.