Caught My Partner Cheating With a Stranger, But I’m Not Ashamed

So this happened last week. Me and my partner Jane have been together for four years now. It’s not always perfect, but we’re solid, supportive of each other, and mostly just great. Last night though? She surprised me at home late, looking pretty nervous and fidgety. I couldn’t quite figure out why until she finally spilled the beans, or rather, she blurted it out without preamble while avoiding my eyes. Jane told me about this guy she met online a week back; he’s younger, good-looking, and we all know how it goes with that kind of thing. She said they had a brief but intense chat, nothing too serious, just words exchanged, flirty texts, you get the picture. That was last Tuesday. Fast-forward to last night when I came home from work to find Jane in tears. She told me she met this guy at a bar and ended up sleeping with him there. She felt awful about it, said she regretted it as soon as it happened but couldn’t stop herself. Now here we are. I’m angry, of course, not necessarily because my partner cheated (that’s its own thing), more that the whole setup was so secretive and sneaky. But here’s where things get weird for me: after she told me what happened, instead of getting angrier or even breaking up with her on the spot like maybe I should have, I found myself feeling… liberated? I don’t know if it’s just because we’re in a long-term relationship, but seeing Jane open herself up to someone else, outside our bubble? It made something click for me. Maybe all this secrecy and repression is what led us here. I’m conflicted right now, part of me feels betrayed by her actions, another part wonders if this was just the spark we needed to move forward or let go in a healthy way. I didn’t punish her (not that there’s much point now), but I can’t say I haven’t thought about going out and doing something similar myself. It’s crazy how our relationship dynamics shifted overnight. I’m asking you all, is this normal? Should I feel guilty or relieved for not being as angry as expected after hearing the news? What do I do next with Jane, who seems to be trying really hard but can’t seem to get past her guilt herself? Am I justified in feeling a bit more at peace about the whole situation than maybe I should?