She was very apologetic about not responding, and she tried to divert the conversation, but everything about it bothers me.
It happened a few months ago, and for a few weeks I couldn't decide whether to break things off with her or not. She wanted to get exclusive a month after it happened. But it still bothered me and I don't trust her the same way, but she doesn't want to talk about what happened and doesn't understand why it bothers me but understands it was hard for me.
What can I do?