Bf and I had a giant fight at 1.1.2018 at about 2am. I went inside while he fired firecrackers with my brothers and went through his phone (he goes through mine whenever he wants and I've even put his fingerprint as option to unlock my phone without password) since he hides his phone from me constantly. I saw him texting to a girl and last few texts were missed calls from her and him saying "I'm at gf's place, don't call me now" she apologized and his answer was "it's okay, she's asleep but don't". I freaked out, went to sent media and saw him sending pic with full on hard in boxers. I ran out on balcony and screamed his name and ordering him in house in a second.He got really scared (i'm usually "short and cute" but now I was devil himself. Also, he's an ex gangster who only fears his father yelling and now me) the door was locked and he almost broke it before I unlocked. He was shaking in fear, trying to hug me but I pushed him away screaming about messages I found. 7yo neighbor who was outside with them having fun ran to his house where my parents were and screamed in fear for my mom "Come quick, they are arguing Nina will kill Luka" (he liked him very much and was scared i'd really do it). My mom ran in my room like I was the one in danger, she hugged me and calmed me a bit down while he was standing in corrner of my room shaking in fear and staring at me. I asked mom to leave and had very long convo with him about it. It ended up that the girl was one he sent it to while he was hanging out with his narco friends, they had a little game where they'd get drunk like asses and take one of their phones, find a girl and talk dirty to her and send that picture (that picture is the one he took for me for our 1st month of relationship). He was really sorry and started crying. He told me he was scared he'll lose me, promised he'll never do that again, never hide stuff from me again and if I say "give me your phone" he can't ever refuse. She called him(at 5am) because she got a bf and was scared he'd send stuff like that again, he didn't want to be rude and said it's okay but not to call then nor again at all and that he has gf and is at my place. Spent 2h after that with him, hugging him and calmimg him down. Now we are stronger as a couple, have no more secrets and no more hiding. He is very sensitive about me and even told his mother he'll kill her when she started laughing about me being chubby and ugly. he never leaves nor hangs up the call without "I love you". Even in LDR, we are almost 3 years together. sorry for such long post but I had to tell someone about it and I just don't trust any of my friends enough to say that. It's really important to me what happened that night because it made us closer and "firends" would most likely make fun of it or place doubt about him. I'm pretty sure he's the one and I don't want people placing insecurity about him nor us when it's all fine. Thank you for reading and giving your time for me.