<human>: Summarize the given text in a few sentences.

My gf and I have been dating for 8 months now. She is 20 and I  am 24. I looked at her text messages to her best friend out of curiosity to see what she tells her about me, I really wish I hadn't.

Before she and I were exclusive she knew of a guy she had known for a while that liked her and they hung out one time just before we became bf/gr. She is still friends with him and talks to him every now and then, she swears she has no feelings for him at all though, here is where it goes down hill.

I read a text between her best friend and her and it was really upsetting, she talked about how she was having a problem because she was having dreams about him. Her friend asked her who she saw a future with and she said both of us.
Her friend asked her if she really loved me, she said yes. She then went on saying that she wishes he would just get a gf already to make the whole thing easier on her.
I have confronted her with my suspicions about her having feelings for him and she gets very upset with me and defensive and denies, denies, denies- I haven't told her that I saw the text.
I told her I would never tell her who she can or can't be friends with, or talk to, or hangout with. But I really want to tell her to stop being friends with this guy, problem is she is friends with him and his whole family. 

Im so in love with this beautiful woman and am at a loss of what to do. Do I come clean about innocently reading a text between her and her friend and stumbling upon what she is thinking? Do I give her an ultimatum of his friendship or me? What do I do about the whole thing?
<bot>: ! Read a text between gf and her best friend. She may have feelings for another guy I have asked her about before. Do I confront her about having read the text? Ultimatum? Help please.