Cheating or not ??

I'm a Sahm , Me and my boyfriend have been together for 11 years and have two beautiful daughters one is 7 years old and the other is 3 months old . Recently I noticed something is off. I went through his phone while he was asleep and noticed is x aka twitter was full of naked woman. At first I didn't care because I know he watches porn but then I open the dms and my heart sank . He was messaging these other woman and telling them to ft him on some website called camsoda and also hyping them up. I want to know if I'm tripping or not i don't know if I should confront him or not because i know I will crash out and beat the shit out of him .