A lot of mixed feelings

Good morning everyone so I wanted to ask again since I’m new to this and maybe I’m just overthinking or over reacting and wanted to get other’s opinion on this situation. So my wife and me started our open marriage about a week and a half ago she’s had one date so far and another coming up in 2 weeks. While in my previous post I talked about my feelings about the date I talked to a lot of the community and they helped me understand my feelings better and they helped me a lot by talking to me. For context since I think it does matter to the situation i want to give details about the arrangement of our open marriage. We both agreed that this would be a completely open and honest ordeal we would both tell each other what we wanted to do and what we were doing. i.e if she was going on a date, going out with someone, and including any sexual activity that she was participating in with anyone. We both agreed that this is how it should be and if either of us was uncomfortable we would stop and we still have this agreement. So with that in mind about a week ago she took a trip to visit a friend who was about 4 hrs away from us and stay the night with her. But she didn’t disclose that she also asked a guy she went on a date with about a week ago to come with her. So I didn’t know he was there. This was on the 23rd of November and I found out and I admit this is because she was acting distant from me and didn’t want me to touch her or be near her and she was hiding her phone from me a lot so I went through her phone when she was sleeping which I felt awful about and still do honestly. After that I waited till after thanksgiving to talk about what happened since I didn’t want her to be stressed out on the holiday with her family. Where she told me everything that she did besides having sex which she admitted they did after I asked her for the 2nd time in about a 15 minute span of time. This led to her crying and saying she was sorry about everything and her reason for not telling me was she felt like the she made a mistake not telling me and that the sex disgusted her thinking About what she was doing and it was easier to pretend nothing happened that to admit she had made a mistake and that she felt like she was cheating because it was behind my back. But honestly I wasn’t mad about the sex I was more upset and still kinda am about her not being honest with me about it. I did reassure her that everything’s ok between us and don’t get me wrong it is but since then I’ve had doubts about continuing this if she is to afraid to tell me what she’s doing and I want to ask all of you if I should feel a little betrayed or if I’m over reacting and just need to get over it cuss I feel a lot of emotions about it right now and the idea of them having sex is arousing but at the same time I don’t want to continue this if she won’t be honest with me about what she’s doing since I feel like her hiding that from me is kinda fucked up seeing as we started this with honest communication and a clear understanding of what we need to do before anything happens.