My marriage is over and I can't watch Arcane anymore

My wife (37f) and I (35) have been together for 8 years, married for 7 and, all in all, it's been a great marriage. Sure, we have our ups and downs but we have mostly ups as far as I'm concerned.

We share everything. And I mean everything. She knows about everyone I've been with and I know everyone she's been with. She only had three bf in her life. The first one lasted 10 years, the second one lasted 5 and now me.

My wife is bi and I'm 100% ok with that. I told her since the beggining that I respect that but I don't feel comfortable with her being with other people. I've been cheated before and the very first time I was cheated it was with a girl. So I told her, even though it's been 2 decades, I don't want to go through that again. She said it was ok and on we went.

Over the past few years she's been complaining she has difficulties making friends on her own. I've tried to introduce her to my friends, but she misses having her own friends, her own stories and I feel that. It sucks not to have that. So I told her to seek online through a number of relationship apps that offer friendship as an option. This is where I majorly fucked up. I know.

She downloaded, you guessed it, tinder. At first, I was ok with that because she was showing me everything, she was happy because she was talking with women her age and with similar interests and, naive me, was happy that she was connecting with people and, maybe, making new friends.

There's this on girl, Emma (not her real name), she's been talking to the most. I was so happy to see her developing some sort of friendship. Emma seemed great.

However Emma and my wife were talking all day, everyday. And I mean, all day. Non stop texting. Eventually, my wife told me she was going to meet Emma for the first time and I was 'wow honey, that's awesome'. JESUS FUCKING CHRIST I'M STUPID!!!!

A few days before they met I was feeling weird about this whole situation, we had a conversation about it and she told me she was feeling something for Emma, she may, eventually, want to do it and whatnot.
I was blindsided by this and I reminded her our conversation in the beggining of our relationship and told her I'm not comfortable with her being with other people. If that's something she wants, awesome. Let me know, we go our separate ways and everyone can be happy.
She told me not to worry and asked me if I was ok with her going out with Emma. I didn't want to be an asshole, so I told her it was ok as long as it was just a couple of friends hanging out.

You can see where this is going, right?
My wife told she'd be home at 10:30pm and arrived late, at 00:00. She was talkative, happy and then she went on to take a shower.

I admit this wasn't my finest moment and curiosity got the best of me and I went through her phone. Their texts were sweet and friendly at first, but then got a bit intimate.

And my wife got a new pet name for her. Cupcake. For those who are unaware, there's a Sitcom based on the game League of Legends, that I've been playing since 2012, and there's this couple (Caitlyn and Vi). The two girls have pet names for each other and one of them is 'cupcake'.

My wife watched Arcane because of me. Yeah... Fuck me.

I confronted her when she came out of the shower, we argued, she told she's confused and I told her I'm not. I'm not gonna stand in the way of her happiness, however I'm not going through this and wait while she decides what she wants to do.

Currently, I'm at my mom's house, figuring out what to do. Her family has been blowing up my phone trying to talk to me, to make come back, she's tried a few times to talk to me, but i'm gonna be honest, I'm a bit hurt.

The whole petname, I'm confused thing... I don't know what I'm going to do tomorrow. However, I knew what I had to do today. I deleted League of Legends from my PC because I couldn't stand to look at it.

I don't want to get divorced, I fucking love my wife and our life together. Maybe tomorrow I'll talk to her and see what she has to say. I know I'm rambling like an old man yelling at the clouds. Sorry, reddit.