This question circled my head for months now. I've read the handbook but I'm still a bit confused on some stuffs. When I dated the LVM from this post:

https://www.reddit.com/r/FemaleDatingStrategy/comments/hxaybf/one_of_my_ex_is_a_lvm/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

There are sone stuff that I realize was very crappy for me to do but I don't know if I was truly in the wrong for this. He told me that I "made assumptions" a lot which his "toxic" ex also made and he hates it. He's kind of shady so I couldn't help it. We met on this app called Yubo (kind of like Tinder for teens). One of the picture of my selfie as his wallpaper that he sent me was quite recent and we were together then, a notification from the app popped up even though he told me he deleted it when he met me. I was mad at him for that and he was mad at me for "making assumptions". I feel like I was in the wrong because he always told me that he HATESSSSSSSS cheating because his mom got cheated on before and he doesn't want to see anyone going through that. I felt like I antagonized him and was in the wrong for this. Please help me ladies.

Edit: I wasn't being clear 100%, I apologize. I mean that I felt like me making assumptions about him that he might be getting "friendly" with other girls was my fault and I treated him bad for doing so.