What should I do 😓

So I caught my boyfriend watching porn the other day. I got so mad because why would he have to do that. Am I not good enough for him or what? I literally almost broke up with him. So tonight I was playing a game on his phone and pressed upon the keyboard and presses paste and had a link of a porn site I went on it and it was. I'm so sad what should I do should I tell him? Help I hate it he said he wouldn't do it again.Â