ADVICE: Comparing myself to others

So a couple of days ago I showed my boyfriend a picture of this girl I know ( she’s very pretty!) and I’m kinda jealous of this girl but anyway I showed him a picture of her and asked if he thought she was a attractive and he said yes. I got mad and really upset because she’s everything I’m not. He also said he naturally sees pretty girls as attractive and that’s normal but it just really upset me and made me feel like shit