Confusion

School has been back in session for three weeks now. Three weeks in and I am still feeling like I am trying to find my sea legs. I am trying to figure out how to get my students to read the text book. Any suggestions? Wait I have to have readers to give suggestions first. LOL

Life took a funny turn for me recently. My best friend from high school flew down to spend a week with us before we all drove back together. Being we hadn't spent much time together since reconnecting, I think the visit went really well. I thought she was comfortable around us.

About a week ago, we were on the phone and she told me able a dinner date her and her hubby went on with another couple. Then proceeds to tell me about the conversation. That her hubby opened it with the comment that she had just spent a week with two lesbians. Then the questions began. Did you switch sides, did you join in, did...
Things that should have never been asked, but were. She didn't say anything. In my opinion, she wasn't a friend. She should have stopped the conversation, walked away if that is what it took. Am I wrong?
I am hurt and upset. Knowing she would allow those conversations to take place really disappoints me. I don't know how to handle it. I have sent her a message telling her it hurt, that I don't know what to do with this. That I feel like she disrespected me and allowed others to disrespect me by not saying anything. By allowing it to happen, she approved of it.
Am I going to lose a friend? is she a true friend if she is only a friend when she is in my presence?