Kind of pissed I missed out on my wife’s horniest years

This isn’t the most slutty confession, just figured it belongs here due to the content. So we’ve been married going on 3 years and I couldn’t imaging being with anyone else. We have the most incredible sex, lots of playing and exploring, we’re both into some light kink, like being tied up, filming each other, and some public fun. We used to be fuck buddies back in the day and at some point lost connection married other people, this marriages failed and we somehow found our way back to each other. In those years, she had a lot of sexual experiences that we had talked about experiencing together but as soon as we got married it was taken off the table. She’s had a threesome before with a couple close friends, an ffm experience, that was a full blown threesome. She’s had a mmf oral experience where the focus was on her, and another ffm experience that was oral only, with the focus on the guy. I don’t mind any of these things, first of all they weren’t while we were together, and second I like that she was not afraid to explore her sexuality. The thing I have a problem with is this. We had discussed having a threesome together with another woman early on, she has a minor attraction to woman and after that one experience realized she likes to eat pussy. Anytime I bring it up, now that we’re married, it’s ignored or the subject changed. She’s no longer willing because we’re married. We have great sex, but it’s become once a week. Even though I try far more often than that, I just feel that I missed her peak sexual years and wish I had been able to have those experiences with her.