My bf of 3 years “cheated”....again.

It’s currently 2 o’clock at night where I live. I’m at my bfs house (actually his parents house as were in our early twenties and both still live at home) and I just wanted to go to bed. He already fell asleep listening to a YouTube video on his phone. I wanted to remove his phone and clicked on his messages (not completely on accident, not gonna lie). He recently switched medication and it has some pretty bad effects and I was hoping that I would see that he tries to reach out to some of his friends who he lost contact with. I also wanted to see if he writes with anybody else. And whilst he still does that (which makes me happy, he has a lot of friends all over the world thanks to HelloTalk and other apps) I also saw that he had some recent conversations with a couple of women. He didn’t safe their numbers on his phone and all of their chats were muted (so he wouldn’t get a notification if they’d text him). That already seemed a little fishy and the most recent text said “sure, I’d enjoy it sir” - naturally I clicked on it. Long story short: He currently sexts with around 3 other girls, something he also did around 2 years ago.

If you’re asking yourself: why did you stay the first time he sexted another woman? At that time I was quite unwell and any kind of sex was nearly impossible and I was also quite intolerable (not that it excuses that behavior, just for context) and I kinda played it down as a weird power-fetish and that the other woman lived on the other side of the globe, so a meeting was never intended. When I found out back then it was also at night and I didn’t say anything the next day, only when he brought me to the train station I asked him about it. We had a very long talk and I distanced myself from him for some time. Needless to say we sorted things out and everything was fine (I guess, never checked his phone the last 2 years).

But now? We have a great relationship and a fucking great sex life, so no need to get that elsewhere (even if it’s a power-fetish). I also spend most of my time at his parents house, they’re probably more involved in my life than my actual parents and I will be honest: I was pretty sure I would spend the rest of my life with him. I’m very integrated into his family (just for reference: He and his parents even offered to buy me a car, after my parents broke mine and didn’t replace it, take me on every vacation and are just overall very loving and caring towards me).

He also always says that he doesn’t consider porn cheating (which I agree with, go watch all the porn in the world, I do the same) but he also doesn’t consider sleeping with a prostitute cheating (he never slept with one! He just said it), as he wouldn’t have feelings for her (something I don’t agree with obviously, and I told him that). So one could guess that he doesn’t see sexting as a big deal but because it has happened before he knows how I feel about it.

So my question now is: should I wake him up and confront him? (Mind you I don’t have a way to get home), wait until tomorrow? Immediately break up? Pack my bag and walk home for 4 hours? (Not) say something?

I’m sorry. This text is quite long and chaotic and English isn’t my native language and I’m currently not in a great mood so this is probably full of mistakes.

PS: I’m just sad to see my love life, future and (honestly) my “family” crumble before my eyes.