Need to know if I’m f*cked up for my thoughts. Looking for serious advice.

Here’s the backdrop... So my girlfriend and I have been together for 3 years. I came out of a 3 year relationship before meeting her and she came out of a 12 year marriage prior to meeting me.

Lately I’ve come to second guess her honesty. So tell me if I’m fucked up in my thinking.

So in the “getting to know each other” phase I asked her if she had ever done a threesome. She said she did several with her ex husband. I was like “wow” and asked her about them. She declined to answer. A little bit later she bragged about doing threesomes with a previous boyfriend. Again I was curious and she refused to answer any questions about it. I accepted her answers. But a little later in the relationship she demanded to know about things prior to me meeting her and I figured if I was going to be with her then she deserved honesty. A little later I was still curious about the threesomes and our sex life is rather boring so I wanted to at least have a vicarious experience and help her open up and maybe we could enhance our sex life (something other than once a week after dark in her bed and the same position). She snapped and said she only did one with her ex husband and it was towards the end of the marriage and she regrets it because that’s when he started cheating on her. Well, he cheated on her the entire marriage so that was a fabrication. And the fact the number dropped from several to one singular occurrence towards the end of their marriage also piqued my distrust. Finally she asked something about my past and I said “I deserve a quiz pro quo”. So she told me a g-rated description. A while later during an argument she said “of course I held things back from you.”

This area has been bothering me more and more lately. She only tells me what she wants but expects honesty from me. Am I putting too much into this? Should I just let it go? Am I wrong to want to know details?

To tell the truth I’m trying less in the relationship and finding myself not desiring her as much. Am I fucked up for feeling this way? Is she wrong? Am I?

Just curious. Looking for thoughts.