<human>: To begin with our relationship has been rocky the past couple months, she suffers from anxiety and has started taking xanex starting about 2.5 months ago. The reason for the strain in our relationship has been mostly because I had been out of work for a long time, but started working again around the end of march. During the past couple of months there has been little to no sex, but we had been slowly recovering recently.

On friday she had set off for a mini-vacation by herself, as recommened by her psychiatrist. After she had left I got on her laptop to play video games as hers is much better than mine. She had left her facebook up and i read a conversation with she had with her "best friend" about intentions have having sex all weekend with him. I was hurt, I was shocked, I was blindsided. 

I called her shortly after reading it and confronted her over the phone. I asked questions like "why would you do this?" "When did you start feeling this way?" trying to get a dialogue going, but she could only reply with "i dont know." I asked her to call off her plans and come home so we could confront this. She was unwilling to do that. I told her I would make the 4 hour drive to where she is, to confront our problem. she was unwilling to do that too. So here I am stuck at home waiting for her for four days while she is hanging out with the guy she intended to have sex with. I dont know if i can trust her not to, but i want to.

I have a hundred questions for her by time we get back, and many ideas on how to repair our relationship. But I am afraid she won't offer any input, any explanation. This situation has made me realize that we need to talk more, be more open and honest. But if she can't handle that then I am unwilling to continue the relationship. I have plans in my head but the waiting is killing me.

Can you condense the text into a few key points?
<bot>: Girlfriend had intentions on cheating on me while she is out of town, I confront her on phone but have to wait 4 days to confront her in person while she hangs out with guy she had been intending to cheat with.