Sex/porn/love life

So my boyfriend watches porn and we’ve never talked about it or anything but I’m insecure about it because it’s all what he’s interested & i look the complete opposite of what he likes to watch, if that makes sense. I don’t know how to go about it because it does make me feel some type of way but i feel in the wrong because he has every right to watch and do whatever he pleases. I’m already insecure as it is & this just makes it worse. Like if he wanted a girl that looked like that, that is sexually attractive to him, why is he with me? I need help lol idk what to do