Okay, so I'm in a real messed-up situation and need some perspective. I (30F) was with my fiancé, (32M), for 5 years, engaged for 1. Things were... good, mostly. We had our issues, but I thought we were building a life together.

Then, I found the texts. Long story short, He was having an affair with someone from his work. I am devastated. The trust is just... gone.

This is where it gets complicated. He has an old friend, let's call him Alex (31M). Alex and I go way back - we actually had a thing in college, but it never went anywhere serious, and we stayed friends. We'd kept in touch over the years, and he's always been... there.

When I found out about my fiancé, I was a mess. I won't go into all the details, but Alex was one of the only people I called. He was supportive, and that’s it we didn’t even meet up… but there’s always flirting.

We didn’t break off the engagement, but told him I knew about the affair, and that I reached out to his old friend. He's upset, of course, full of apologies and promises, but I'm not hearing it.

Now, I'm dealing with the fallout. I feel... a lot of things. Hurt, angry, betrayed, but also... guilty? Confused? Part of me feels like an eye for an eye. Another part of me feels like I stooped to his level. And then there's this whole other layer of maybe actually having feelings for the other guy.

So, Reddit, AITA? Did I handle this in the worst possible way? Should I just walk away and not speak to either of them?