I (28m) found nudes on my wife's (29f) phone of another man and herself. This is not the first time what can I do?

So my wife (29f) and i (28m) have been together with the exception of a long break when we were 18 and 19 for 10 years. (She left me for another guy) and every year or two since we've been back together i keep finding things on her phone. The first was a fetlife account where she was chatting with multiple men. The second was a coworker she was speaking explicitly with. Third she asked a random neighbor out for coffee in our apartment complex in a flirting manner. And finally this. I found nudes of her that I'd never seen before, and looked in the deleted pictures on her phone and found pictures of another man's nudes.

We've had some rough patched with my finances and depression as well as hers. I must admit I was feeling sexually frustrated last year and went to a "massage parlor" but didn't go through with the end part. And she found out. She's insists that nothing has become physical any of these times and would leave if she were going to go through with it, because she did when thats what she wanted.

Our relationship is great except for this horrible bi annual ritual of her seeking attention. She makes the money In the relationship and I'm very limited in my capacity to support myself for any sort of trial separation. I don't want to leave. I love her. But I feel I need to advocate for myself despite my own wrongdoings. I feel so trapped and hopeless.

Came across this amazing post. But what's even funnier is if you visit his profile and see the only other post he's made:

This might be the dumbest man on Earth.

Oh, he's from Portland? She's not cheating on him; he's just unknowingly in a poly relationship.