Finding something on my boyfriends phone

So I recently found out my boyfriend has twitter… but it’s a fake account filled with porn and half naked women. I know it’s normal for men to watch porn but I notice he follows more and more each day. Am I not what he desires?? Does he get more pleasure by looking at his phone than me in his presence? He’s being so secretive and I don’t know how to bring it up and or exactly what to say. I don’t care if he watches porn but knowing the fact that he’s following all these other women to look at and admire like I will never be enough. I’ve talked to him about how I felt uncomfortable knowing he had half naked women on his phone which he said he understood me and he was sorry then I find a secret twitter account.. idk