I just found out that my gf of 6 years has been cheating on me with my best friend for months.

I'm in my bedroom of our shared flat in tears, typing this on my iPhone. I don't know what else to do.<br><br>It's 4:40am. We're supposed to be going on holiday together tomorrow and I was going though her stuff to find some passport details for the holiday to email to her parents. When looking through her purse I found a receipt from a McDonald's in our town but I know she hasn't been there. It's because we are a 10 minute walk away from her work and she always has her lunch there. She also never goes when she's on her own and she doesn't like eating McDonald's in the car so they must have been eating inside. I'm not sure where she said she was that day but she was lying because she was with him. He works near there and I know they went together because they text about multiple McDonald's receipts from the same day. There's 3 receipts that are from the same McDonald's with one from the O2 store in the same area. The O2 store is near her work but the McDonald's is not so I know they went together. <br><br>I'm just in shock. I have no idea what to do. I just feel so betrayed.<br><br>I confronted her a minute ago and she woke up and saw me crying. She immediately knew that I knew so there's no denying it. She wants to talk in the morning and she's gone to sleep in my other room. I saw that she was online earlier when I was but she closed her computer quickly when she saw me.<br><br>I'm just so upset. I don't have any family. I have no friends because he was my only friend. I thought she was my soulmate and she's just betrayed me. I know I'll never be able to trust her again.<br><br>It's 5am, I've been crying for an hour at this point. I don't know what to do. Should I just go and stay with my friend? No. Because he's the one she's been cheating with. I just don't know what to do now.<br><br>She's been lying to me for months. I just feel so awful. I just don't know what to do.<br><br>Edit because I'm getting a lot of questions: she was most likely able to keep the McDonald's receipts because I don't go through her bag often. She may have also kept them for sentimental reasons especially if they had their first date there. I know they went to McDonald's together because there's receipts from the same McDonald's with one from the O2 store near her work. <br><br>They have been talking for months. They were most likely having an affair for months too.