So my Girlfriend of 1 month calls me over at 5 AM. She wanted some money to do hair and get fixed up. We had a wonderful time. Then she went to take a shower and I just sat there listening and enjoying the moment. when she got out of the shower and walked into her room I heard a deep voice one of a man little raspy from waking up say, "Is he still here?" I have no clue who it sounded like.

My girlfriend in her normal voice said, "I don't know?"

And everything went quiet for a few mins until she came to me saying she wanted to get stuff done today and she had laundry to do. 

We both live alone, and I heard it crystal clear! 

That evening I decided to confront her! Wow it turned into a huge fight. Calling me crazy swearing she never do anything like that. 

I feel like an idiot but I believe her. I have been on anti depression meds for 90 days. 

I'm curious could anything be timed so perfect to make sense with on unrecognizable voice and a recognized voice have a conversation about me so perfectly timed during a situation such as this happen. 

Or is she cheating on me....